Aquarium Water Tests & Kits

API® 5-in-1 Aquarium Test Strips are the quick and easy way to test the 5 most important water parameters – pH, KH, GH, nitrate, and nitrite – in o...

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

Fluval Sea Hydrometer provides an accurate and convenient method of measuring specific gravity and salt level in marine aquariums. Regular testing ...

Calcium is one of the most important elements in a reef aquarium. Reef invertebrates such as corals, crustaceans, mollusks and even some types of e...

Keep the water quality in your aquarium at optimum levels with new Aqua One Quick Drop pH Test Kit.Regular testing and maintenance of water conditi...

Regular testing and maintenance of water parameters are important for the health of fish and plants. Aqua One test kits make it easy to balance a r...

Regular testing and maintenance of water parameters are important for the health of fish, plants and coral. Aqua One test kits make it easy to bala...

Regular testing and maintenance of water parameters are important for the health of fish, plants and coral. Aqua One test kits make it easy to bala...

Pre-measured refractometer calibration solution takes the guesswork out of properly calibrating your instrument - with no need for expensive or unr...