Soda Ash vs Baking Soda What’s the Difference PoolCareTotalcarbonated beverage ashes is a superb additive for pools. This substance is a crucial component in maintaining the purity and balance of the water. Soft drink is specifically formulated to aid decrease acidity and maintain the alkalinity in one's water feature. By employing soda ash for pools, you can guarantee optimal water conditions for bathing and upgraded protection for all in the pool.