Aquarium Pharmaceuticals (API) Phos-Zorb is an aquarium phosphate remover. This filtration media eliminates cloudy water and dirt caused by phosphates, and helps reduce the maintenance of your aquarium. Phos-Zorb filtration media removes phosphate and silicate, which are common nutrients found in fresh and saltwater aquariums that contribute to water murkiness, and additionally removes compounds that inhibit aquatic plant growth.

• Size 6. One large filter pouch.
• For freshwater & saltwater aquariums up to 55 gallons
• Removes phosphate & silicate
• Reduces risk of fish loss
• Fits most filters