1 Tablet maintains 20,000 gallons of pool water per week. Significantly reduces chlorine usage and helps maintain water balance. Loosens biofilm, water mold and slime from lines. Prolongs equipment life & liners by removing scale and lime deposits. Softens the pool water for a more comfortable bather experience The Pure water experience use in combination with chlorine, bromine or other oxidizer. Effective with all pool sanitizes and all types of filters.