How To Raise Ph And Free Chlorine In Pool. Salt should sit around 5000ppm (parts per million). If you're sporting a chlorinator, add salt.
Before adding chlorine, check the ph, and if it's higher than 7.8, add muriatic acid or sodium disulfate to bring it down to a value between 7.2 and 7.6. Then place the chlorinator back into the pool, and the pool is ready to be used again. Free chlorine has a difficult time sanitizing contaminants as ph increases.
Chlorine sanitizes well in water with a ph below 7.2, but acidic water corrodes fixtures in the pool and causes discomfort for swimmers.
You have to properly match total chlorine to free chlorine. To raise the ph of your pool, fill a 5 gallon bucket with water. If your pool water ph is below 7.2 then you must take an action to raise the ph of pool water. Each 20kg bag of salt equals roughly 500ppm for 60,000l pools.
