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 the aquarium.

KEY FEATURES:

• Rapidly removes phosphate and silicate
• Synthetic granular ferric oxide (GFO)
• Less dust and thus is easier to use than most competing GFO products