API PHOS-ZORB cartridge eliminates cloudy water and helps reduce the maintenance of the aquarium. Phosphates can cause cloudy water and dirty aquarium glass and gravel. PHOS-ZORB removes phosphate and silicate, common nutrients found in fresh and saltwater aquariums.
4-side double layered pad for efficient mechanical filtration.
Use when testing indicates the presence of phosphate (> 0 ppm / mg/L) or silicate (> 0.5 ppm / mg/L)