{"product_id":"focustronic-magnesium-pro-reagent-kit","title":"Focustronic - Magnesium PRO Reagent Kit","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eFocustronic - Magnesium PRO Reagent Kit\u003c\/h2\u003e\n\u003cp\u003eThe Focustronic - Magnesium PRO Reagent Kit supplies the three-part chemical solutions required for automated magnesium testing with the Focustronic Mastertronic Essential. Designed for monitoring one of the three major reef-building water parameters, this kit provides approximately 83 magnesium measurements, allowing reef keepers to track magnesium levels, evaluate supplementation needs, and maintain the chemical balance that supports healthy coral growth.\u003c\/p\u003e\n\u003ch3\u003ePrecision Magnesium Monitoring for Reef Aquariums\u003c\/h3\u003e\n\u003cp\u003eMagnesium plays a fundamental role in seawater chemistry by helping maintain the balance between calcium and alkalinity. When magnesium becomes depleted, maintaining stable calcium and carbonate levels can become increasingly difficult, particularly in reef aquariums with significant stony coral and coralline algae growth. Regular magnesium testing helps identify changing conditions before making unnecessary adjustments to calcium or alkalinity supplementation.\u003c\/p\u003e\n\u003cp\u003eThe Mastertronic Essential automates the chemical testing process using precision liquid handling and colourimetric measurement. Results are recorded through the Focustronic app, making it easier to compare magnesium measurements over time and assess whether existing supplementation is meeting aquarium demand.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximately 83 magnesium tests:\u003c\/strong\u003e Suitable for scheduled routine testing without preparing a manual test each time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree-part reagent system:\u003c\/strong\u003e Includes the individual solutions used for the supported Focustronic magnesium measurement procedure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMastertronic Essential compatibility:\u003c\/strong\u003e Developed for the manufacturer's current automated multi-parameter testing system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement range:\u003c\/strong\u003e Approximately 1,000 to 1,700 mg\/L, covering the magnesium levels typically encountered in marine reef aquariums.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTesting resolution:\u003c\/strong\u003e 1 mg\/L with manufacturer-listed measurement accuracy of approximately ±16 mg\/L.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated trend monitoring:\u003c\/strong\u003e Enables scheduled measurements that can be reviewed alongside calcium and alkalinity results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMagnesium Testing and Supplementation Considerations\u003c\/h3\u003e\n\u003cp\u003eFocustronic recommends checking magnesium and calcium regularly rather than relying exclusively on alkalinity measurements. These elements generally change more gradually than alkalinity, so testing two or three times per week can provide useful information for normal reef maintenance. In systems using balanced three-part supplementation, magnesium results help determine whether the selected dosing method is maintaining the desired relationship between the major elements.\u003c\/p\u003e\n\u003cp\u003eThe Focustronic magnesium reagents are intended for Mastertronic Essential and are not currently approved for the original Mastertronic. They are testing chemicals only and do not increase magnesium concentrations in aquarium water.\u003c\/p\u003e\n\u003ch3\u003eDirections\u003c\/h3\u003e\n\u003cp\u003ePlace Magnesium Reagents 1, 2, and 3 in the designated Mastertronic Essential vial positions 1, 2, and 3 respectively. Gently mix the reagent bottles as instructed by Focustronic before transferring the solutions, and do not exceed the recommended fill levels. Select the Focustronic magnesium reagent profile in the app, enter the appropriate reagent quantities, and configure the preferred testing schedule. Keep each reagent in its assigned vial to prevent cross-contamination, replace depleted solutions as required, and follow the manufacturer's calibration and maintenance procedures for dependable measurements.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMagnesium Reagent 1 - 50 ml (1.69 US fl oz)\u003c\/li\u003e\n\u003cli\u003eMagnesium Reagent 2 - 50 ml (1.69 US fl oz)\u003c\/li\u003e\n\u003cli\u003eMagnesium Reagent 3 - 200 ml (6.76 US fl oz)\u003c\/li\u003e\n\u003cli\u003eEnough reagents for approximately 83 automated magnesium tests\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Focustronic","offers":[{"title":"Default Title","offer_id":67711768789280,"sku":"FT-RMAGP","price":49.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/8222\/5696\/files\/magnesium-reagent-kit.png?v=1791929219","url":"https:\/\/aquariumsupplydirect.com\/products\/focustronic-magnesium-pro-reagent-kit","provider":"J\u0026L Aquatics - Aquarium Supply Direct","version":"1.0","type":"link"}