How to Use Soda Ash for TieDye Sarah Makerseltzer cinder is a terrific additive to put in swimming pools. It acts as a essential element in maintaining the cleanliness and harmony of the water. Soda is particularly formulated to help lower acidity and balance the alkalinity in one's pool. By utilizing soda ash for pools, you can assure ideal water quality for swimming and enhanced safety for all in your swimming pool.