Soda Ash Vs Baking Soda For Pools When To Use Whichseltzer cinder is a wonderful additive to put in aquatic facilities. It is a essential element in preserving the sanitation and harmony of the water. Soda ash for pools is specifically formulated to assist lower acidity and stabilize the pH levels in your swimming pool. By utilizing soda ash for pools, you can make certain optimal water quality for enjoying and improved protection for everyone in the water.