Rendezvous spa specialists pH Up, 1-Pound;

This sanitizer increases the pH level in swimming pool water. Aids in preventing staining, scaling, clouding and balances pool water. Keeping proper pH levels will help ensure pool sanitizers are working at maximum efficiency. Compatible with chlorine, bromine, ozone and biguanide sanitizers as well as salt water pools. Applications when pH falls below 7.2, while the pump is in operation distribute pH up into the deep end of the pool. For every 10,000 gallons of water add the following amounts, 1-pound when pH is below 6.6, 3/4-pound when pH is between 6.6 and 7.0, 1/2 pound when pH is between 7.0 and 7.2. Product contain 1-pound. Includes 12 pieces per pack.