Leslie's Soda Ash pH Up Leslie's Pool Suppliescarbonated beverage ash is a incredible additive to be used in aquatic facilities. It acts as a key ingredient in keeping up the sanitation and harmony of the water. Pop is specifically formulated to help decrease acidity and balance the pH levels in the pool. By utilizing soda ash for pools, you can assure ideal water quality for enjoying and improved protection for all in your swimming pool.