The Complete Guide to Soda Ash Tie Dye Best Practices Tipspop cinder is a superb additive to put in swimming pools. It is a crucial component in keeping up the cleanliness and harmony of the water. Soft drink is specially formulated to aid diminish acidity and balance the alkalinity in the pool. By employing soda ash for pools, you can assure perfect water conditions for enjoying and upgraded safety for all in the water.