API

API TEST TUBES are compatible with any aquarium or pond water test kits and are perfect for testing more water parameters at one time.  **Price fo...

PH TEST & ADJUSTER KIT   The API® pH TEST & ADJUSTER KIT not only allows you to easily and accurately test the pH level in your freshwater...

CALCIUM TEST KIT   Calcium is one of the most important elements in a reef aquarium. Reef invertebrates, such as corals, crustaceans, mollusks, an...

Phosphate can enter your aquarium through tap water, fish waste, and decaying organics such as uneaten food and dead algae. Excess phosphate contr...

When keeping freshwater fish and plants, the general hardness (GH) and carbonate hardness (KH) of aquarium water should match their natural habita...

The API® pH TEST KIT monitors pH to maintain healthy freshwater conditions in your tank. pH control is imperative to prevent the harmful effects of...

Use the API® AMMONIA TEST STRIPS as the quick and accurate way to test for the presence of ammonia. Kit reads 0 to 6 ppm of ammonia, and alerts yo...

API® 5-IN-1 TEST STRIPS are the quick and easy way to test the 5 most important aquarium water parameters – pH, KH, GH, nitrate, and nitrite – in ...