Always add this product with pump and filter operating to ensure complete mixing and good circulation. This product is completely soluble and dissolves quickly, so no premixing is required. Broadcast this uniformly over the surface of the spa water. Apply when spa is not in use.
For most spas with normal bathing loads, this product should be added after every use, and once each week for maintenance, at a dose of 1 - 1 1/2 ounce per 300 gallons of spa water. Each 1 ounce dose of this product will raise the free chlorine concentration by about 2 ppm in 300 gallons of spa water. More frequent and/or heavier doses may be required during periods of extremely heavy use. Test chlorine level prior to re-entry to make sure the residual concentration in the spa is between 3 and 5 ppm. Re-entry is prohibited above levels of 5 ppm chlorine due to risk of bodily injury.
