Seachem PhosGuard rapidly removes phosphate and silicate from marine and freshwater aquariums. It is highly porous for high capacity and bead-shaped for optimum water flow. Seachem PhosGuard is not recommended for phosphate buffered freshwater.
Seachem PhosGuard 500ml
Directions for use:
For best results, PhosGuard should be placed so as to maximize the flow of water through it. It may be used in a canister filter, box filter, or any high flow area of a trickle filter. In some situations it may be necessary to use in a filter bag. Use 250 mL (~1 cup) for every 75 gallons. Leave product in place for 4 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/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. Over treating is not recommended. PhosGuard is not an exchange resin, it does not release anything into the water. It does not leach phosphate or silicate back into the water and may be removed, dried, and returned to service until exhausted. Continuous use of small quantities is better than intermittent use of larger quantities.
* Ingredients and dosage listed are for informational purposes only and are subject to change by the manufacturer. Always refer to the manufacturer and actual product label/inserts for current ingredients, recommended dosage, precautions and warnings before use.