Seachem 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.
Phosphate/silicate control
Use 250 ml for every 75 gallons. Leave product in place for 4 days, then test phosphate or silicate concentrations. If the concentration of the component you are trying to decrease has not dropped to around 0.02 mg/L, then replace the PhosGuard, otherwise leave in place until levels begin to climb again. As long as concentrations remain under control, the product is not exhausted.
Each 500 ml of PhosGuard treats over 150 gallons (i.e. will remove up to 30 mg/L phosphate in 150 gallons of water, depending on the initial phosphate/silicate concentrations and the current biological load.
