DIRECTIONS: Use one bag for each 120 L (30 gallons). 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. Leave product in place for 4 days, then test phosphate or silicate concentrations with either MultiTes: 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. PhosGuard does not leach phosphate or silicate back into the water and may be removed, dried, and returned to service until exhausted. Each 100 mL of PhosGuard will remove up to 20 mg/L phosphate in 120 L (30 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. Continuous use of small quantities is better than intermittent use of larger quantities.Caution! May generate heat on initial contact with water. Pre-wet by adding to a double volume of freshwater (e.g. 100 mL of product in 200 mL water), followed by a rinse.
Seachem PhosGuard for Freshwater & Saltwater, Treats 30 Gallons, 2.1 oz
Size: 2.1 oz. Gallons Treated: Treats 30 gallons