Use 1/3 cup (85 ml) of Phos-ELIMINATOR™ for every 50 gallons saltwater or 100 gallons freshwater.
Product should be rinsed with freshwater before use.
CAUTION - product may generate heat and fizzle upon initial contact with water - handle carefully.
Place into a filter bag and put filter bag in area of high water flow. Product is exhausted once you see phosphate levels start to increase.