1. Remove cartridges from your spa filter. 2. With a clean bucket that contains 8 gallons of water, add 32 oz. per 110 sq ft of the filter area. 3. Let the solution sit for 3 hours before washing off the filter and placing it back in your spa.
For the best results, let the solution soak overnight.
*It is important to know that this filter clean is adaptable with chlorine, bromine, and biguanide.