PhosGuard

High performance phosphate and silicate control for marine or freshwater aquariums. Seachem PhosGuard rapidly removes inorganic and organic phosphate and prevents buildup in your aquarium. Highly porous, high capacity beads resist compaction for optimum water flow essential for effective aquarium phosphate removal. 2 L/1.2 kg treats approximately 600 gallons.

Note: PhosGuard is not recommended for phosphate buffered freshwater.

Shop all Aquarium Phosphate Control products.

Please click on "More Information" for directions for use.

If the concentration of phosphate 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.

Caution! May generate heat on initial contact with water. Pre-wet by adding to a double volume of freshwater (e.g. 250 mL of product in 500 mL water), followed by a rinse.

General Information
PhosGuard rapidly removes phosphate and silicate from marine and freshwater aquariums. It is not recommended for phosphate buffered freshwater. PhosGuard is highly porous for high capacity and bead-shaped for optimum water flow. It outperforms all competing products.

Why It's Different
PhosGuard is spherical. Its shape allows for maximum water flow through the media. Granular phosphate removers can become compacted, dramatically limiting their capacity to remove phosphate. If the media can't come into contact with the water, it can't remove phosphate from it. PhosGuard is the only spherical phosphate remover on the market.

NOTE: Aluminum Oxide IS NOT REGENERABLE. No matter what anyone tells you, baking an aluminum oxide media does not restore its capacity to remove phosphate. This misconception comes from the product's original intended use: industrial air-drying. Obviously, if a product absorbs moisture, the best way to remove that moisture is to bake it out. However, that only removes the water, not the contaminants contained in that water.