Ammonia Alert is an innovative color device for continuously detecting and monitoring toxic free ammonia. A sensor changes reversibly from yellow to green to blue, relative to the ammonia concentration. No test kits, chemicals, or procedures are needed. The device detects less than 0.05 mg/L (ppm) free ammonia and alerts you to the #1 killer before any sign of stress. It lasts over a year and replacement sensors are available. Marine or freshwater use.

In the absence of free ammonia the unit will assume a yellow or faint yellow-green color. It is normal for the dry sensor to have a greenish hue. It may take up to a few days for a dry sensor to equilibrate with the water. No sampling of water, chemicals, or test procedures are required. The presence of the free ammonia is detectable continuously with a response time of about 15 minutes. Response to decreasing ammonia is slower, requiring about 4 hours to go from TOXIC to SAFE on removal of ammonia.

FREE SHIPPING OVER $99.00!*

$9.95 FLAT RATE FOR LESS THAN $99.00 - CANADA AND LOWER 48 US WIDE!

*EXCEPTIONS:

• Light Bulbs over 36" are shipped at a flat rate of $9.95. No quantity Limit. You can ship one or one hundred bulbs for the same price (valid for both Canada and the US).
• Any heavy or bulky items will incur a 100% charge of the actual shipping cost (valid for both Canada and the US). Heavy bulky items include (but are not limited to): salt, dry rock, sand, chillers, sumps, aquariums, stands, and some filter media.
• Frozen or perishable food can only be shipped via UPS Express. We have discounted the express shipping of these items to help the hobbyist out.
• Livestock is covered by a different shipping policy. To view the policy and further information regarding shipping livestock, click here.

General Notes:

• We always make our best effort to ship your order via the carrier chosen during the check-out process; however, for some multi-piece shipments and/or remote destinations, we must reserve the right to use another carrier at our discretion (and without prior notice). If you require notice of any changes made to the carrier, please mention it in the special instructions during check-out.
• Upon request, we will do our best to ship your dry goods as per your specifications (courier, airlines, on your account, etc.).
• Quoted rates are the carriers live discounted shipping rates after adjusting for any/all shipping promotions.

Aquarium Equipment Returns

• All returns and/or exchanges must be made within 14 days of receipt of product.
• Products may only be returned unused, and in original unopened packaging.
• J&L Aquatics reserves the right to charge a non-refundable 20% restocking charge for any/all returned merchandise (excluding exchanges).
• J&L Aquatics will not be responsible for return shipping charges. Original shipping charges are non-refundable. If the item was originally shipped under our free shipping policy, the cost of doing so will be removed from the credit. Before returning/exchanging any goods, we require that you authorize your return with J&L Aquatics. Any items returned without our authorization will be declined.
• In the event that your order is damaged by the carrier, a claim will be filed with the carrier company. Upon approval of the claim by the carrier, your original order will be re-shipped to you at no additional cost. If you wish to return the damaged goods for a refund or credit, the 20% restocking charge will be applied. J&L Aquatics will not be held responsible for any/all shipping delays that may occur from time to time.
• Special order & sale items are not returnable under any circumstances.
• Dry Good Order cancellations may also be subject to a 20% restocking charge.
• Orders that are returned or refunded when using Affirm or similar financing are subject to a 5% service charge of the original order amount including tax.