It is a violation of Federal Law to use this product in a manner inconsistent with its labeling. Read entire label and use strictly in accordance with precautionary statements and directions. Ensure all pool equipment is working properly. Clean or backwash filter following manufacturer’s directions. Adjust pH to between 7.2 -7.6. Add stabilizer to establish a minimum stabilizer level of 30 - 40 ppm to reduce the degradative effects of sunlight upon the chlorine residual. Super-chlorinate the pool so that a chlorine residual of between 1-4 ppm is obtained. When using other products as outlined in directions for this product, always follow directions on those products.