Fast-acting spray & rinse formula with NEW color sray indicator for complete coverage.
Fast-acting spray & rinse formula with NEW color sray indicator for complete coverage. Features: Blue color spray indicator Great for use when soaking filter overnight is not an option. Removes oil, grease and calcium from filters in minutes. Applications: Monthly: 1. Remove cartridge filter element from filter housing and rinse thoroughly with water to remove loose material. 2. Saturate the filter element with water. 3. Spray Instant Cartridge Clean over entire surface area for maximum effect. 4. Let set 3-6 minutes. 5. Rinse filter COMPLETELY with water and replace filter back into spa. (NOTE: If filter is not completely rinsed, foaming may occur.) 6. For heavily soiled filters, repeat steps 1-5.