Marine Filters & Media

API® BIO-CHEM STARS biological media provides a home for growing massive colonies of nitrifying bacteria to establish and maintain a healthy aquati...

API® TEST TUBES are compatible with any aquarium or pond water test kits and are perfect for testing more water parameters at one time. The pack in...

Use the API® pH TEST STRIPS as a quick and accurate way to test pH levels in your water. These test strips measure a wide range of pH, from 6.0 to ...

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

The API® KH TEST KIT tests fresh or saltwater aquariums for carbonate hardness (KH), and helps monitor water quality and prevent invisible water pr...

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

The API® AMMONIA TEST KIT measures ammonia to help prevent fish loss, as ammonia is the number one stressor and killer of tropical fish. Ammonia is...

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 you...

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 o...

The API® POND 5-IN-1 TEST STRIPS provide accurate results for your pond’s water conditions using a highly precise color chart for easy-to-read resu...