Our pH Minus Granules are completely soluble in water and are used to Lower the pH of pool and spa water, enabling a safe bathing environment and to ensure maximum effectiveness of chlorine. These granules are a white granular solid 10-30mesh.
Test your pool/spa water to establish what the existing chemical level is in your water. Add 500gms of pH reducer per 10,000 gallons of water in private pools and Spas. Pre-dissolve the granules and add to the pool/spa choosing a period when the pool is not in use, ideally the evening is considered the best time. The pH of your water should be between 7.2-7.6 for optimal bather comfort, with and ideal reading of 7.4. When used in soft water pools the dose rate should be halved to avoid wide swings of pH. Never mix pool chemicals together and always test the water with a reliable tester before use.