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PhosGuard, 2 L / 67.6 oz.
For marine and freshwater
Rapidly hydrodynamics
Removes phosphate
Phosguard rapidly removes phosphate and silicate from marine and freshwater aquaria. It is not recommended for phosphate buffered freshwater. Phosguard is highly porous for high capacity and bead-shaped for optimum water flow. It outperforms all competing products.