{"title":"Reef Crest Additives","description":"\u003cp\u003e\u003cspan\u003eReef Crest supplements alongside bulk reef chemistry. Parts A, B and C handle calcium, alkalinity and magnesium, while the bulk listings offer the raw salts by themselves — calcium chloride, sodium carbonate, sodium bicarbonate, calcium hydroxide, magnesium chloride and magnesium sulfate — with a small and a large package for each. Run a test first and change only one value per session, since calcium, alkalinity and magnesium in a reef system are linked and shift together.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"reef-crest-bulk-sodium-bicarbonate-3600-gram","title":"Reef Crest Bulk Sodium Bicarbonate (3600 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Sodium Bicarbonate (3600 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Sodium Bicarbonate (3600 Gram) is a larger pharmaceutical grade sodium bicarbonate package for reef alkalinity maintenance and supplement mixing.\u003c\/p\u003e\n\u003ch3\u003eLarger Sodium Bicarbonate Size for Reef Dosing\u003c\/h3\u003e\n\u003cp\u003eThis 3600 gram size is useful for aquariums that require regular alkalinity supplementation. Sodium bicarbonate helps maintain alkalinity while offering a gentler pH effect than sodium carbonate, making it a practical option when pH is already acceptable or elevated.\u003c\/p\u003e\n\u003ch3\u003e3600 Gram Sodium Bicarbonate Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade sodium bicarbonate.\u003c\/li\u003e\n\u003cli\u003eUsed to maintain alkalinity in reef and marine aquariums.\u003c\/li\u003e\n\u003cli\u003eSupports pH stability and growth of calcareous organisms.\u003c\/li\u003e\n\u003cli\u003eGood choice for customers mixing their own alkalinity supplement solution.\u003c\/li\u003e\n\u003cli\u003e3600 gram size offers more product for frequent dosing or larger systems.\u003c\/li\u003e\n\u003cli\u003eChoose sodium carbonate instead when pH is low.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eKeep alkalinity stable rather than making sudden large adjustments. Test regularly and dose into high flow. For automated systems, divide the daily dose into smaller increments throughout the day to reduce parameter swings.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eDissolve the required amount in freshwater before adding it to the aquarium. Slowly add the solution to a high-flow area of the sump or display. As a reference dose, 1.2 tsp \/ 5.6 grams will raise 100 gallons of water by approximately 0.5 dKH. Re-test alkalinity after mixing and store sealed in a dry location.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Sodium Bicarbonate - 3600 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289896489248,"sku":"JL-CALK36","price":50.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-calk36.jpg?v=1786639042"},{"product_id":"reef-crest-bulk-calcium-chloride-1500-gram","title":"Reef Crest Bulk Calcium Chloride (1500 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Calcium Chloride (1500 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Calcium Chloride (1500 Gram) is a pharmaceutical grade calcium chloride supplement for reef aquariums, portioned for hobbyists mixing their own calcium dosing solution.\u003c\/p\u003e\n\u003ch3\u003eCalcium Chloride for Reef Supplement Mixing\u003c\/h3\u003e\n\u003cp\u003eCalcium chloride is used to raise and maintain calcium in reef aquariums with stony corals, coralline algae and other calcium-demanding organisms. This 1500 gram size is a practical choice for regular home aquarium dosing without moving into full bulk pail quantities.\u003c\/p\u003e\n\u003ch3\u003e1500 Gram Calcium Chloride Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade calcium chloride.\u003c\/li\u003e\n\u003cli\u003eUsed to maintain calcium levels in reef and marine aquariums.\u003c\/li\u003e\n\u003cli\u003eUseful for mixing calcium supplement solutions for two-part dosing systems.\u003c\/li\u003e\n\u003cli\u003eSupports coral skeleton growth when balanced with alkalinity and magnesium.\u003c\/li\u003e\n\u003cli\u003e1500 gram size is convenient for regular reef maintenance and smaller dosing setups.\u003c\/li\u003e\n\u003cli\u003eDry format stores easily before mixing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eUse calcium chloride with regular calcium, alkalinity and magnesium testing. Calcium should not be adjusted in isolation because reef stability depends on all three foundation elements staying in balance.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eDissolve fully in fresh RO\/DI water before adding to the aquarium. Add the prepared solution slowly to a high-flow area of the sump or aquarium and avoid direct contact with livestock. Do not dose dry chemical directly into the aquarium. Store unused product sealed in a dry location.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Calcium Chloride - 1500 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289898586400,"sku":"JL-CCAL16","price":18.9,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-ccal16.jpg?v=1783638899"},{"product_id":"reef-crest-bulk-sodium-carbonate-1600-gram","title":"Reef Crest Bulk Sodium Carbonate (1600 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Sodium Carbonate (1600 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Sodium Carbonate (1600 Gram) is a pharmaceutical grade soda ash alkalinity supplement for reef and marine aquariums.\u003c\/p\u003e\n\u003ch3\u003eSoda Ash for Alkalinity and pH Support\u003c\/h3\u003e\n\u003cp\u003eSodium carbonate is used to maintain alkalinity, which supports aquarium pH and the growth of calcareous organisms. It has a stronger pH-raising effect than sodium bicarbonate, making it useful when alkalinity support and pH lift are both desired.\u003c\/p\u003e\n\u003ch3\u003e1600 Gram Sodium Carbonate Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade sodium carbonate.\u003c\/li\u003e\n\u003cli\u003eUsed to maintain alkalinity in reef and marine aquariums.\u003c\/li\u003e\n\u003cli\u003eHelps support pH stability and coral skeleton growth.\u003c\/li\u003e\n\u003cli\u003eUseful for mixing alkalinity supplement solutions.\u003c\/li\u003e\n\u003cli\u003e1600 gram size is convenient for regular home aquarium dosing.\u003c\/li\u003e\n\u003cli\u003eChoose sodium bicarbonate instead when pH is high.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eSodium carbonate can raise pH, so test both alkalinity and pH before dosing. Dose gradually and avoid large one-time corrections, especially in coral-heavy reef aquariums where alkalinity stability is critical.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eDissolve completely in fresh RO\/DI water before use. Dose the prepared solution slowly into a high-flow area of the sump or aquarium. Do not add dry powder directly to the aquarium. Re-test alkalinity after the system has mixed and store unused product sealed in a dry location.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Sodium Carbonate - 1600 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289895768352,"sku":"JL-CALKPH16","price":23.8,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-calkph16.jpg?v=1753839351"},{"product_id":"reef-crest-bulk-calcium-hydroxide-950-gram","title":"Reef Crest Bulk Calcium Hydroxide (950 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Calcium Hydroxide (950 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Calcium Hydroxide (950 Gram) is a pharmaceutical grade kalkwasser powder for reef aquariums, used to help maintain calcium, alkalinity and pH.\u003c\/p\u003e\n\u003ch3\u003eKalkwasser Powder for Reef Maintenance\u003c\/h3\u003e\n\u003cp\u003eCalcium hydroxide is mixed with fresh water to create kalkwasser, a high-pH solution commonly used through top-off or controlled dosing to support calcium and alkalinity demand. The 950 gram size is a convenient option for reef keepers who use kalkwasser regularly but do not need a full bulk pail.\u003c\/p\u003e\n\u003ch3\u003e950 Gram Calcium Hydroxide Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade calcium hydroxide.\u003c\/li\u003e\n\u003cli\u003eUsed to prepare kalkwasser for reef aquariums.\u003c\/li\u003e\n\u003cli\u003eHelps maintain calcium and alkalinity when used correctly.\u003c\/li\u003e\n\u003cli\u003eCan help support higher pH in suitable systems.\u003c\/li\u003e\n\u003cli\u003eUseful for evaporation-based supplementation through top-off water.\u003c\/li\u003e\n\u003cli\u003e950 gram size is practical for home reef aquariums and routine kalkwasser use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKalkwasser Use Notes\u003c\/h3\u003e\n\u003cp\u003eKalkwasser has a very high pH and must be dosed carefully. It is best used with regular calcium, alkalinity and pH testing, and should be added slowly to avoid sudden pH changes.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eMix with fresh RO\/DI water in a suitable container and allow undissolved powder to settle. Dose only the clear solution slowly, preferably through an auto top off system or controlled dosing method. Avoid adding slurry or dry powder directly to the aquarium. Store sealed in a dry location.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Calcium Hydroxide - 950 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289896620320,"sku":"JL-CCALHYD09","price":17.8,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-ccalhyd09.jpg?v=1783638901"},{"product_id":"reef-crest-bulk-magnesium-chloride-2500-gram","title":"Reef Crest Bulk Magnesium Chloride (2500 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Magnesium Chloride (2500 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Magnesium Chloride (2500 Gram) is a larger pharmaceutical grade magnesium chloride supplement for reef aquarium magnesium maintenance and supplement mixing.\u003c\/p\u003e\n\u003ch3\u003eLarger Magnesium Chloride Size for Reef Systems\u003c\/h3\u003e\n\u003cp\u003eThis 2500 gram size is useful for reef keepers who mix magnesium solution regularly or maintain aquariums with ongoing magnesium demand. Magnesium chloride helps maintain magnesium levels, which in turn supports stable calcium and alkalinity behaviour in marine aquariums.\u003c\/p\u003e\n\u003ch3\u003e2500 Gram Magnesium Chloride Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade magnesium chloride.\u003c\/li\u003e\n\u003cli\u003eUsed to maintain magnesium in reef aquariums.\u003c\/li\u003e\n\u003cli\u003eSupports balanced calcium, alkalinity and magnesium chemistry.\u003c\/li\u003e\n\u003cli\u003eGood choice for mixing larger batches of magnesium supplement solution.\u003c\/li\u003e\n\u003cli\u003eBest used with magnesium sulfate as part of a balanced magnesium formula.\u003c\/li\u003e\n\u003cli\u003e2500 gram size is practical for higher-use reef aquariums or maintenance routines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eLow magnesium can make calcium and alkalinity harder to stabilize. Test magnesium regularly and adjust dosing gradually, especially when correcting a significant deficiency or changing supplement routines.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eMix completely with fresh RO\/DI water before aquarium use. Add the prepared solution slowly to a high-flow area of the sump or aquarium and re-test after the system has mixed. Do not dose dry magnesium chloride directly into the aquarium. Store sealed in a dry location.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Magnesium Chloride - 2500 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289898717472,"sku":"JL-CMAGCL28","price":83.35,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-cmagcl28.jpg?v=1783638897"},{"product_id":"reef-crest-bulk-magnesium-chloride-1250-gram","title":"Reef Crest Bulk Magnesium Chloride (1250 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Magnesium Chloride (1250 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Magnesium Chloride (1250 Gram) is a pharmaceutical grade magnesium chloride supplement for reef aquariums, used to help maintain balanced magnesium levels.\u003c\/p\u003e\n\u003ch3\u003eMagnesium Chloride for Reef Supplement Mixing\u003c\/h3\u003e\n\u003cp\u003eMagnesium chloride is commonly used to maintain magnesium in reef aquariums. Proper magnesium helps support stable calcium and alkalinity chemistry, reducing unwanted precipitation and helping maintain a more balanced reef environment.\u003c\/p\u003e\n\u003ch3\u003e1250 Gram Magnesium Chloride Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade magnesium chloride.\u003c\/li\u003e\n\u003cli\u003eUsed to maintain magnesium in reef aquariums.\u003c\/li\u003e\n\u003cli\u003eHelps support balanced calcium and alkalinity levels.\u003c\/li\u003e\n\u003cli\u003eUseful for mixing magnesium supplement solutions.\u003c\/li\u003e\n\u003cli\u003eBest used as part of a balanced magnesium routine with magnesium sulfate.\u003c\/li\u003e\n\u003cli\u003e1250 gram size is convenient for smaller batches and regular home reef use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eMagnesium should be tested before dosing and adjusted gradually. Magnesium chloride is often combined with magnesium sulfate when mixing reef magnesium supplements to help maintain a more balanced ion profile.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eDissolve fully in fresh RO\/DI water before adding to the aquarium. Dose the prepared solution slowly into a high-flow area and avoid direct contact with livestock. Do not add dry chemical directly to the aquarium. Keep unused material sealed and dry.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Magnesium Chloride - 1250 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289895964960,"sku":"JL-CMAGCL14","price":43.05,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-cmagcl14.jpg?v=1753839352"},{"product_id":"reef-crest-bulk-sodium-bicarbonate-1800-gram","title":"Reef Crest Bulk Sodium Bicarbonate (1800 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Sodium Bicarbonate (1800 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Sodium Bicarbonate (1800 Gram) is a pharmaceutical grade alkalinity supplement for reef and marine aquariums.\u003c\/p\u003e\n\u003ch3\u003eSodium Bicarbonate for Stable Alkalinity\u003c\/h3\u003e\n\u003cp\u003eSodium bicarbonate is used to maintain alkalinity, which supports aquarium pH and encourages proper growth rates of calcareous organisms. It is a good choice when alkalinity needs support without the stronger pH lift associated with sodium carbonate.\u003c\/p\u003e\n\u003ch3\u003e1800 Gram Sodium Bicarbonate Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade sodium bicarbonate.\u003c\/li\u003e\n\u003cli\u003eUsed to maintain alkalinity in reef and marine aquariums.\u003c\/li\u003e\n\u003cli\u003eHelps support stable pH and coral skeleton growth.\u003c\/li\u003e\n\u003cli\u003eUseful for larger alkalinity adjustments or regular supplement mixing.\u003c\/li\u003e\n\u003cli\u003e1800 gram size is practical for hobbyists who dose alkalinity regularly.\u003c\/li\u003e\n\u003cli\u003eChoose sodium carbonate instead when pH is low.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eThe goal is to maintain alkalinity as steadily as possible. A dosing pump or timed dosing routine can help provide smaller additions throughout the day instead of large single corrections. Test alkalinity regularly and adjust gradually.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eDissolve in freshwater before adding to the aquarium. Slowly add the prepared solution to a high-flow area of the system. As a reference dose, 1.2 tsp \/ 5.6 grams will raise 100 gallons of water by approximately 0.5 dKH. Re-test alkalinity after the system has mixed and store unused powder sealed in a dry location.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Sodium Bicarbonate - 1800 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289896390944,"sku":"JL-CALK18","price":27.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-calk18.jpg?v=1783638898"},{"product_id":"reef-crest-part-b-1-gallon-alkalinity-mix","title":"Reef Crest Part B - 1 Gallon Alkalinity Mix","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Part B - 1 Gallon Alkalinity Mix\u003c\/h2\u003e\n\u003cp\u003eReef Crest Part B - 1 Gallon Alkalinity Mix is a pharmaceutical grade alkalinity supplement mix for reef aquariums, portioned to make 1 gallon of ready-to-dose Part B solution.\u003c\/p\u003e\n\u003ch3\u003e1 Gallon Alkalinity Mix for Reef Dosing\u003c\/h3\u003e\n\u003cp\u003ePart B is used to maintain alkalinity, which supports stable pH and healthy coral skeleton growth. It is designed to work as part of the Reef Crest 2-part system with Part A Calcium Mix, but it can also be used on its own when alkalinity requires adjustment.\u003c\/p\u003e\n\u003ch3\u003ePart B Alkalinity Mix Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade alkalinity supplement mix.\u003c\/li\u003e\n\u003cli\u003eMakes 1 gallon of alkalinity aquarium supplement.\u003c\/li\u003e\n\u003cli\u003eBest used as part of the Reef Crest 2-part system with Part A.\u003c\/li\u003e\n\u003cli\u003eCan also be used alone for alkalinity maintenance.\u003c\/li\u003e\n\u003cli\u003eHelps support aquarium pH and proper growth of calcareous organisms.\u003c\/li\u003e\n\u003cli\u003eBudget-friendly dry mix format for customers who prefer to mix their own dosing solution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eAlkalinity should be tested regularly and kept as stable as possible. Dose Part A and Part B in equal amounts when using the full 2-part system, but add them at different times to avoid precipitation. Adjust the daily dose based on the aquarium's actual alkalinity demand.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eDissolve the entire contents of one pouch in a 1 gallon dosing container filled with pure water. Extensive mixing is normally required to fully dissolve the powder, and warming the container in water can help speed dissolution. Begin dosing at 2.5 ml per 10 gallons daily into an area of high flow. Test every few days and adjust the dose as needed.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 pouch of Reef Crest Part B - 1 Gallon Alkalinity Mix.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289899077920,"sku":"JL-C2ALKPH1","price":6.1,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-c2alkph1.jpg?v=1753839351"},{"product_id":"reef-crest-bulk-calcium-chloride-3000-gram","title":"Reef Crest Bulk Calcium Chloride (3000 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Calcium Chloride (3000 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Calcium Chloride (3000 Gram) is a larger pharmaceutical grade calcium chloride package for reef keepers who mix calcium supplement solution on a regular basis.\u003c\/p\u003e\n\u003ch3\u003eLarger Calcium Chloride Size for Reef Dosing\u003c\/h3\u003e\n\u003cp\u003eThis 3000 gram size provides more calcium chloride for aquariums with higher calcium consumption or for customers who prefer to mix larger batches of calcium solution. It is commonly used as the calcium component in a balanced two-part reef dosing routine.\u003c\/p\u003e\n\u003ch3\u003e3000 Gram Calcium Chloride Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade calcium chloride for aquarium use.\u003c\/li\u003e\n\u003cli\u003eHelps maintain calcium in reef aquariums with growing corals and coralline algae.\u003c\/li\u003e\n\u003cli\u003eGood choice for mixing larger batches of calcium dosing solution.\u003c\/li\u003e\n\u003cli\u003eUseful as the calcium portion of a two-part supplement program.\u003c\/li\u003e\n\u003cli\u003e3000 gram size is suited to larger aquariums or higher-consumption reef systems.\u003c\/li\u003e\n\u003cli\u003eDry chemical format is economical and easy to store.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eCalcium demand increases as coral growth and coralline algae growth increase. Test calcium regularly and adjust dosing gradually while also monitoring alkalinity and magnesium so the reef system remains chemically balanced.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eMix completely with fresh RO\/DI water before aquarium use. Dose the prepared solution slowly into a high-flow area and re-test calcium after the aquarium has had time to mix. Do not add dry calcium chloride directly to the aquarium. Keep the container sealed and dry between uses.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Calcium Chloride - 3000 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289896554784,"sku":"JL-CCAL32","price":35.85,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-ccal32.jpg?v=1783638899"},{"product_id":"reef-crest-part-c-20oz-magnesium-mix","title":"Reef Crest Part C - 20oz Magnesium Mix","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Part C - 20oz Magnesium Mix\u003c\/h2\u003e\n\u003cp\u003eReef Crest Part C - 20oz Magnesium Mix is a pharmaceutical grade magnesium supplement mix for reef aquariums, portioned to make 20 ounces of ready-to-dose magnesium solution.\u003c\/p\u003e\n\u003ch3\u003eMagnesium Support for 2-Part Reef Dosing\u003c\/h3\u003e\n\u003cp\u003ePart C is used to maintain magnesium after dosing Reef Crest Part A and Part B. Proper magnesium levels help keep calcium and alkalinity balanced, supporting stable reef chemistry and healthy coral growth.\u003c\/p\u003e\n\u003ch3\u003ePart C Magnesium Mix Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade magnesium supplement mix.\u003c\/li\u003e\n\u003cli\u003eMakes 20 ounces of magnesium aquarium supplement.\u003c\/li\u003e\n\u003cli\u003eBest used as part of the Reef Crest 2-part system.\u003c\/li\u003e\n\u003cli\u003eCan also be used alone when magnesium requires adjustment.\u003c\/li\u003e\n\u003cli\u003eHelps maintain the balance between calcium and alkalinity.\u003c\/li\u003e\n\u003cli\u003eDry pouch format is easy to store and mix when needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eMagnesium should be tested regularly and adjusted gradually. When using the full Reef Crest 2-part system, Part C is typically added after 1 gallon of Part A and 1 gallon of Part B have been dosed to the aquarium.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eDissolve the entire contents of one pouch in 20 oz of pure water. Let sit several hours before use. Some precipitate may form after mixing; this is normal. Shake the mix and add when dosing. After 1 gallon of each Part A and Part B have been added to the aquarium, slowly add the 20 oz Part C solution to an area of high flow.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 pouch of Reef Crest Part C - 20oz Magnesium Mix.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289897242912,"sku":"JL-C2MAG1","price":7.75,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-c2mag1.jpg?v=1753839358"},{"product_id":"reef-crest-bulk-sodium-carbonate-3200-gram","title":"Reef Crest Bulk Sodium Carbonate (3200 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Sodium Carbonate (3200 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Sodium Carbonate (3200 Gram) is a larger pharmaceutical grade soda ash alkalinity supplement for reef aquariums with regular dosing demand.\u003c\/p\u003e\n\u003ch3\u003eLarger Soda Ash Size for Reef Alkalinity Dosing\u003c\/h3\u003e\n\u003cp\u003eThis 3200 gram size is ideal for aquariums that use sodium carbonate regularly to maintain alkalinity. It supports stable reef chemistry while also helping raise pH more noticeably than sodium bicarbonate.\u003c\/p\u003e\n\u003ch3\u003e3200 Gram Sodium Carbonate Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade sodium carbonate.\u003c\/li\u003e\n\u003cli\u003eUsed to maintain alkalinity in reef and marine aquariums.\u003c\/li\u003e\n\u003cli\u003eSupports aquarium pH and growth of calcareous organisms.\u003c\/li\u003e\n\u003cli\u003eStrong choice when pH is low and alkalinity also needs support.\u003c\/li\u003e\n\u003cli\u003e3200 gram size provides more product for frequent dosing or larger aquariums.\u003c\/li\u003e\n\u003cli\u003eChoose sodium bicarbonate instead when pH is high.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eAlkalinity should be kept as stable as possible. A dosing pump or timed dosing schedule can help spread additions through the day. Because sodium carbonate can raise pH, dose carefully and monitor pH when making adjustments.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eDissolve completely in fresh RO\/DI water before adding to the aquarium. Slowly dose the prepared solution into a high-flow area and avoid direct contact with livestock. Do not add dry powder directly to the aquarium. Re-test alkalinity after mixing and keep unused product sealed in a dry location.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Sodium Carbonate - 3200 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289896227104,"sku":"JL-CALKPH32","price":44.8,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-calkph32.jpg?v=1786639041"},{"product_id":"reef-crest-bulk-magnesium-sulfate-3200-gram","title":"Reef Crest Bulk Magnesium Sulfate (3200 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Magnesium Sulfate (3200 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Magnesium Sulfate (3200 Gram) is a larger pharmaceutical grade magnesium sulfate supplement for reef aquariums with regular magnesium maintenance needs.\u003c\/p\u003e\n\u003ch3\u003eLarger Magnesium Sulfate Size for Reef Dosing\u003c\/h3\u003e\n\u003cp\u003eThis 3200 gram size is useful for aquariums that require ongoing magnesium supplementation or for customers mixing larger batches of magnesium solution. It is commonly used alongside magnesium chloride to help create a more balanced reef magnesium supplement routine.\u003c\/p\u003e\n\u003ch3\u003e3200 Gram Magnesium Sulfate Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade magnesium sulfate.\u003c\/li\u003e\n\u003cli\u003eUsed to maintain magnesium in reef and marine aquariums.\u003c\/li\u003e\n\u003cli\u003ePairs well with magnesium chloride for balanced magnesium supplement mixing.\u003c\/li\u003e\n\u003cli\u003eHelps support stable calcium and alkalinity chemistry.\u003c\/li\u003e\n\u003cli\u003e3200 gram size provides more product for larger systems or frequent dosing.\u003c\/li\u003e\n\u003cli\u003eDry format is economical and easy to store before mixing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eUse magnesium sulfate as part of a measured magnesium maintenance routine. Test magnesium regularly and adjust gradually, especially when correcting levels after heavy coral growth, water changes or long periods without magnesium supplementation.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eMix completely with fresh RO\/DI water before adding to the aquarium. Dose the prepared solution slowly to a high-flow area and re-test after the system has mixed. Do not add dry powder directly to the aquarium. Keep unused product sealed and dry between uses.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Magnesium Sulfate - 3200 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289896718624,"sku":"JL-CMAGSO36","price":41.45,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-cmagso36.jpg?v=1753839351"},{"product_id":"reef-crest-bulk-calcium-hydroxide-1900-gram","title":"Reef Crest Bulk Calcium Hydroxide (1900 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Calcium Hydroxide (1900 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Calcium Hydroxide (1900 Gram) is a larger pharmaceutical grade kalkwasser powder for reef aquariums with regular calcium, alkalinity and pH support needs.\u003c\/p\u003e\n\u003ch3\u003eLarger Kalkwasser Size for Steady Reef Use\u003c\/h3\u003e\n\u003cp\u003eThis 1900 gram size is well suited to reef aquariums that use kalkwasser as part of their regular top-off or dosing routine. Calcium hydroxide can help maintain calcium and alkalinity while also providing useful pH support in systems where kalkwasser fits the aquarium's evaporation rate and demand.\u003c\/p\u003e\n\u003ch3\u003e1900 Gram Calcium Hydroxide Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade calcium hydroxide for kalkwasser preparation.\u003c\/li\u003e\n\u003cli\u003eHelps maintain calcium and alkalinity in reef aquariums.\u003c\/li\u003e\n\u003cli\u003eCan help raise and support pH when used appropriately.\u003c\/li\u003e\n\u003cli\u003eUseful for top-off based dosing or controlled kalkwasser delivery.\u003c\/li\u003e\n\u003cli\u003e1900 gram size provides more product for frequent kalkwasser users.\u003c\/li\u003e\n\u003cli\u003eDry powder format stores easily when kept sealed and dry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKalkwasser Use Notes\u003c\/h3\u003e\n\u003cp\u003eCalcium hydroxide should be added slowly and carefully because kalkwasser is highly alkaline. Monitor pH, calcium and alkalinity, and avoid using kalkwasser as a fast correction method for large parameter changes.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eMix with fresh RO\/DI water in a separate container and allow the solution to settle before use. Dose only the clear kalkwasser solution slowly into the aquarium system, preferably through an auto top off or controlled dosing setup. Do not add dry powder or settled slurry directly to the aquarium. Store sealed in a dry location.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Calcium Hydroxide - 1900 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289896423712,"sku":"JL-CCALHYD19","price":31.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-ccalhyd19.jpg?v=1783638896"},{"product_id":"reef-crest-bulk-magnesium-sulfate-1600-gram","title":"Reef Crest Bulk Magnesium Sulfate (1600 Gram)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Bulk Magnesium Sulfate (1600 Gram)\u003c\/h2\u003e\n\u003cp\u003eReef Crest Bulk Magnesium Sulfate (1600 Gram) is a pharmaceutical grade magnesium sulfate supplement for reef aquarium magnesium maintenance and supplement mixing.\u003c\/p\u003e\n\u003ch3\u003eMagnesium Sulfate for Balanced Reef Dosing\u003c\/h3\u003e\n\u003cp\u003eMagnesium sulfate is used to help maintain magnesium in reef aquariums and is often combined with magnesium chloride when mixing magnesium supplements. Proper magnesium levels help support calcium and alkalinity stability in coral systems.\u003c\/p\u003e\n\u003ch3\u003e1600 Gram Magnesium Sulfate Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade magnesium sulfate.\u003c\/li\u003e\n\u003cli\u003eUsed to maintain magnesium in reef aquariums.\u003c\/li\u003e\n\u003cli\u003eBest used with magnesium chloride as part of a balanced magnesium routine.\u003c\/li\u003e\n\u003cli\u003eHelps support stable calcium and alkalinity levels.\u003c\/li\u003e\n\u003cli\u003eUseful for mixing magnesium supplement solutions at home.\u003c\/li\u003e\n\u003cli\u003e1600 gram size is practical for regular aquarium maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eMagnesium sulfate is useful as part of a balanced magnesium supplement mix. Test magnesium before dosing and avoid making large single corrections without confirming the aquarium's true water volume and current magnesium level.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eDissolve fully in fresh RO\/DI water before use. Add the prepared solution slowly into a high-flow area of the aquarium or sump. Do not add dry chemical directly to the aquarium. Store sealed in a dry location and keep unused material dry.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 container of Reef Crest Bulk Magnesium Sulfate - 1600 grams.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289896587552,"sku":"JL-CMAGSO18","price":22.25,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-cmagso18.jpg?v=1783638897"},{"product_id":"reef-crest-part-a-1-gallon-calcium-mix","title":"Reef Crest Part A - 1 Gallon Calcium Mix","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eReef Crest Part A - 1 Gallon Calcium Mix\u003c\/h2\u003e\n\u003cp\u003eReef Crest Part A - 1 Gallon Calcium Mix is a pharmaceutical grade calcium supplement mix for reef aquariums, portioned to make 1 gallon of ready-to-dose Part A solution.\u003c\/p\u003e\n\u003ch3\u003e1 Gallon Calcium Mix for Reef Supplementation\u003c\/h3\u003e\n\u003cp\u003ePart A is used to maintain calcium levels in reef aquariums, helping support coral skeleton growth, coralline algae growth and other calcium-demanding organisms. It is best used with Reef Crest Part B Alkalinity Mix as part of a balanced 2-part dosing routine.\u003c\/p\u003e\n\u003ch3\u003ePart A Calcium Mix Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePharmaceutical grade calcium supplement mix.\u003c\/li\u003e\n\u003cli\u003eMakes 1 gallon of calcium aquarium supplement.\u003c\/li\u003e\n\u003cli\u003eBest used as part of the Reef Crest 2-part system with Part B.\u003c\/li\u003e\n\u003cli\u003eCan also be used alone when calcium requires adjustment.\u003c\/li\u003e\n\u003cli\u003eHelps maintain bioavailable calcium for coral and calcareous organism growth.\u003c\/li\u003e\n\u003cli\u003eDry mix format is economical and easy to store before mixing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReef Aquarium Use Notes\u003c\/h3\u003e\n\u003cp\u003eCalcium should be maintained in balance with alkalinity and magnesium. When using Part A and Part B together, dose equal amounts but add them at different times. Test alkalinity every few days while dialing in the dose, since required dosage is based on alkalinity demand.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003eDissolve the entire contents of one pouch in one half gallon of filtered water. Caution: the solution will become hot while mixing. Pour the mix into the dosing container and bring the total volume to 1 gallon. Let sit several hours before use. Begin dosing at 2.5 ml per 10 gallons daily into an area of high flow and adjust based on testing.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 pouch of Reef Crest Part A - 1 Gallon Calcium Mix.\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Reef Crest Aquatics","offers":[{"title":"Default Title","offer_id":50289896948000,"sku":"JL-C2CAL1","price":6.1,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/jl-c2cal1.jpg?v=1753839353"}],"url":"https:\/\/aquariumsupplydirect.com\/collections\/reef-crest-additives.oembed","provider":"J\u0026L Aquatics - Aquarium Supply Direct","version":"1.0","type":"link"}