Pool Chlorine Ph

Use this pool ph dosage chart to determine the correct amount of pool ph adjustment chemical to add for a desired change in ph level.

Pool chlorine ph.

If the ph is above 7 the water is basic. For normal use your pool s ph should be between 7 4 and 7 6. The most common sanitizer for swimming pool water is chlorine. Shocking a pool with too high ph will cause cloudiness.

Unless the water has a sufficient level of free chlorine algae will grow and make your pool green and cloudy. Simply put it determines whether your pool is acid or alkaline base. A low ph of 7 1 is desirable for shocking and sanitation but 7 4 is best for swimmer comfort surface protection and overall water balance. The optimum ph for pool water is 7 4 since this is the same as the ph in human eyes and mucous membranes.

If it is below 7 the water is acid. It has cyanuric acid also known as chlorine stabilizer or pool stabilizer added to it. In this scenario you can add all the chlorine you want and your ph levels will render it useless. Free chlorine has a difficult time sanitizing contaminants as ph increases.

Free chlorine 2 0 to 4 0 ppm. Pool total alkalinity. Whether it s low or high unbalanced ph is the super villain of your pool s germ fighting hero. The ph scale goes from 0 to 14 where ph 7 is neutral.

Free chlorine should be maintained at 2 to 4 ppm and ph should be maintained at 7 4 to 7 6. Unbalanced ph kills chlorine s power. Maintaining the ph higher than 7 8 will increase the tendency to form scale or cloudy water. On june 28th if you recall we discussed with pool spa water chemistry expert richard falk the impact of sodium hypochlorite on ph in our piece titled liquid chlorine raises ph or does it.

Water s ph level is just a measure of total acid alkalinity balance. For shocking it should be between 7 2 and 7 6. For this post we will focus just on chlorine but ph is a factor in almost all pool water sanitizers effectiveness. A ph of 7 4 also gives good chlorine disinfection.

Richard explained that the ph rise folks typically experience in swimming pools comes from the outgassing of carbon dioxide and not from hypochlorites. For most pool owners chlorine is added using chlorine tablets chlorine granules salt chlorine generators and liquid chlorine. The ph is a measure of the acidity of the water. Although chlorine is the single most important component in terms of taking care of your pool it is not independent from the other components of your pool water.

The cyanuric acid protects the chlorine so it stays in the water three to five times longer which means it s more effective at keeping the pool clean and doesn.