Seachem PhosNet 125g

Seachem PhosNet is a granular ferric oxide (GFO) with high porosity, high surface area and high binding capacity. It will rapidly remove phosphates and silicates from both freshwater and saltwater and will not release them back into your aquarium. It exhibits stronger binding than most competing products and consequently can reduce phosphates and silicates to very low levels. Seachem PhosNet also offers less dust and thus is easier to use than most competing GFO products.

Size - 125g

Comparing Seachem Phosphate Removers: PO4bound 

PhosGuard (Alumina Oxide) - 0.87 mg/g

PhosBond (GFO and Alumina Oxide hybrid) - 1.19 mg/g

PhosNet (GFO) - 1.41 mg/g