Seachem Seawater filter PhosBond

Rapid phosphate and silicate removal. Aluminum oxide phosphate absorber coated with ferric oxide. PhosBond is a revolutionary new product that combines the phosphate removal capabilities of granular aluminum oxide and ferric oxide in a single material, creating a synergistic effect. It rapidly eliminates phosphates and silicates from seawater (phosphates can cause mortality in marine invertebrates) and freshwater (phosphates are responsible for algae proliferation), combining the best of both anti-phosphate types. Its high porosity and surface area give it great binding capacity, while its strength means it won't degrade under mechanical stress.