Cartridge Cleaner 4-Pack R180

Concentrated formula deep cleans cartridge filters & removes dirt, oil, grease & scale. An overnight soak will assure Complete removal of all contaminants including those that may have been deeply set over months of use. Use every three months to ensure proper filtration & easy spa maintenance. Instructions: remove grids or cartridges from filter. In a clean, plastic pail, bucket or trash can with 8 gallon of water, add contents of filter clean. (This is enough solution to clean 110 square' of filter area.) place cartridge or grids upright in solution. Soak for a minimum of 3 hours. For maximum effectiveness, soak overnight. Remove filter from solution. Hose off filter with high pressure nozzle & replace.