How to Apply :
Cartridge & DE :
1. Remove cartridge elements or DE grids from filter tank and hose off loose material
2. In a pail, bucket or trash container with 5-10 gallons of water, add one 1L (33.9oz) bottle of Filter Perfect
3. Place cartridge elements or DE grids in solution and soak for a minimum of 6 hours, preferably overnight
4. Remove from solution and rinse thoroughly after recommended time
5. Clean cartridge elements should be allowed to dry before reinstalling
Sand Filters :
1. Have pump running and filter in backwash mode - suction should come primarily from skimmer- not main drain
2. Add one 1L (33.9oz) bottle of Filter Perfect to skimmer
3. Once contents of bottle have entered the filter- turn off pump and put valve in either close or filter position for a minimum of 6 hours
4. Turn pump on with filter set to backwash, run until water flows clear - Do not allow pump to run dry
5. Return filter to normal operation Use a weekly dose of Natural Chemistry? Pool Perfect+PHOSfree or Spa Perfect to further extend filter cycles and reduce maintenance