This solution replaces GFO and other binders and is a very effective tool to remove PO4 in conjunction with an effective skimmer, as the bound PO4 is removed through effective skimming.
The pack contains a iron based powdered phosphate remover, labels for your containers, and a comprehensive mixing instruction sheet. The powder is to be added to RO water and then ready to use in your tank manually or with a dosing pump.