Fluval Nitrite remover foam insert block

Fluval Phosphate Remover rapidly removes excess phosphate, silicate and dissolved organics to create clean and healthy aquarium water. Chemical filter media Traps and controls large and small organic waste and debris Removes unwanted phosphate Helps improve water quality Will not affect pH or hardness For best results, replace monthly or as required after testing water with your Fluval test kits Designed specifically for the Fluval Flex, Spec and Evo aquarium series Convenient 4 x Duo-Pack format