Directions:

For Cartridge elements or Diatomaceous Earth filter grids:

Remove cartridge or D.E grids from the filter tank and hose off loose material. In a pail, bucket or trash container with 5 to 10 gallons of water, add 1 liter bottle of Filter perfect. Place cartridge elements or D.e grids in solution and soak for a minimum of 6 hours, preferably overnight. Remove from solution and rinse thoroughly/ Clean cartridge elements should be allowed too dry before reinstalling.

For Sand Filters

Have pump running and filter in backwash mode. Suction should come primarily from skimmer, not main drain. Add 1 bottle of Filter Perfect to skimmer. Once contents of bottle has entered filter, turn pump off and put valve on either close or filter setting, turn pump off and put valve in either close or filter position for a minimum of 6 hours. Turn pump on with filter setting to backwash, run until water flows clear. Do not allow pump to run dry. Return filter to normal operation.