• Removes phosphate and silicate
• Removes phosphate, a by-product of fish metabolism and decaying organic matter and an additive in some tap water supplies, aquarium products and filtration media
• Will not remove trace elements
• Will not affect pH



Phos-Zorb is a special filtration material that selectively removes phosphate and silicate, common nutrients found in fresh and saltwater aquariums. In saltwater aquariums, excess phosphate lowers the available calcium and magnesium necessary for the growth of hard corals and other invertebrates.

Sources of Phosphate and Silicate in the Aquarium
There are several natural and "man-made" sources of phosphate. Both well and municipal water supplies may contain phosphate, due to natural weathering of phosphate-containing minerals. Some municipal water treatment facilities add phosphate-containing chemicals to the water supply. Runoff also adds phosphate fertilizers to water supplies. Some phosphate-leaching sources in the aquarium include decaying organic matter, fish foods and products that are added to the aquarium, such as pH adjusters, water conditioners and some brands of activated carbon. If left to accumulate, phosphate can lead to reduced water quality.

1. Remove Phos-Zorb filter pouch from plastic bag.



2. DO NOT open Phos-Zorb filter pouch. One 150 g pouch should be used for every 55 U.S. gallons (208 L) of aquarium water.



3. Place filter pouch directly in FilStar filtration basket after (above) the filter foams.



4. Rinse basket under tap water for several minutes to remove dust and activate Phos-Zorb. The activation process will temporarily generate some heat in the Phos-Zorb filter pouch.



5. Replace filter pouch every 1 to 3 months, depending on stocking density and water quality.