Provides the most effective means of removing phosphate and silicate available; never releases them back into the water when exhausted, and requires very little physical space in the filtration system. More effective than similar ...
Description: Kent Marine Phosphate Sponge is not an algaecide, but a ceramic medium which will adsorb phosphates quickly (within hours) when placed directly in the water flow. Works in fresh and saltwater aquariums or ponds to bri...