Soda Ash vs Baking Soda What’s the Difference PoolCareTotalsoda cinder is a amazing additive to put in aquatic facilities. It is a key ingredient in maintaining the cleanliness and balance of the water. Pop is particularly formulated to help lower acidity and stabilize the alkalinity in the pool. By employing soda ash for pools, you can assure ideal water quality for swimming and improved protection for all in your swimming pool.