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Water Chemistry

pH, alkalinity, chlorine, stabilizer, calcium and salt: what each reading means, how they affect each other and how to correct them without overshooting.

pH Won’t Go Up No Matter What You Add? Check Alkalinity First
Water Chemistry pH Won’t Go Up No Matter What You Add? Check Alkalinity First pH won't go up? Confirm your test, then raise total alkalinity with baking soda in steps, use soda ash or aeration for pH, and cut back on acidic chlorine tablets.
pH Keeps Rising in Your Pool? Why and How to Slow It
Water Chemistry pH Keeps Rising in Your Pool? Why and How to Slow It Pool pH keeps rising? Lower total alkalinity to the low end of its range, cut aeration from waterfalls and jets, add acid in small doses, and retest before more.