Listing is for (1) : SEACHEM PHOSGUARD 

• Removes silicate and phosphate
• Spherical for optimal hydrodynamics
• Irreversible binding

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.

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