Seachem PhosGuard 20L (5.3 gal). Is a high capacity and high efficiency filtration product for removing phosphates and silicates from marine and freshwater aquaria. Unlike competing products, Phosguard is bead-shaped for optimum flow characteristics and has an exceptional porosity for enhanced capacity. Phosguard has a working capacity to remove 20 to 60 mg-L of phosphate in 400L (100 gallons) with a similar impact on silicates. It may be used continuously or intermittently, and will not release removed phosphate. Each liter treats up to 1200L (300 gallons). Marine and freshwater. This item is a special order item that is drop shipped direct from Seachem.

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