Seachem PhosGuard rapidly removes phosphate and silicate from marine and freshwater aquaria, however it is not recommended for phosphate buffered freshwater.
It is highly porous for high capacity and bead-shaped for optimum water flow with a spherical shape that allows for maximum water flow through the media.
For best results, PhosGuard should be placed so as to maximize the flow of water through it and may be used in a canister filter, box filter, or any high flow area of a trickle filter.
When using a filter bag use 250 mL (1 cup) for every 300 litres. Leave product in place for four days, then test phosphate or silicate concentrations with either MultiTest: Phosphate or MultiTest: Silicate.
If the concentration of the component you are trying to decrease has not dropped to around 0.02 mg per litre then replace the product, 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 600 litres (i.e. will remove up to 30 mg per litre phosphate in 600 litres of water, depending on the initial phosphate / silicate concentrations and the current biological load.
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