Why does your pool's PH keep increasing?

Answer 1

Gunite and plaster have a high demand for acid because of the lime in the cement. And or high calcium make up water.

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Your pool will naturally increase in pH due to swimmer's waste, sweat, urine, etc...

Keep your pH at 7.6-7.8, not 7.2. 7.2 pH is base upon the Langelier Index which was used for local water companies, but there's a world of difference between pools and how the water company treats your tap water. Good index but bad application for pools.

Answer 2

Soda ash (sodium carbonate), sold as pH Increaser, pH UP or Arm & Hammer Washing soda, will raise swimming pool pH levels.

You can also use borax, sold as 20 Mule Team Borax.

How to maintain those levels varies from pool to pool. If you are chlorinating with trichlor tablets, which are acidic, you'll need periodic additions of soda ash or borax to compensate for the acidity in that form of chlorine.

Answer 3

The source of your water that you add into the pool will increase the PH level. Also the chemicals you might be using will also do the same thing. Any chemical that may have Sodium in it will increase the level.

Answer 4

Usually the sanitizer your using is what causes pH to increase.

If you use a steady diet of Liquid Chlorine (Sodium Hypo) your pH will increase as well as your TDS (Total Desolved Solids)

Also, if you have a salt water /chlorine generator, the by product of generating chlorine is sodium carbonate (pH increaser)

Calcium Hypochlorite (granular shock) will also raise pH levels in a pool.

Bromine, Trichlor have a very low pH and will lower the pH level in your pool over time. Hope this helps.

Answer 5

Plaster pools always have a demand for acid. It is the alkaline in the lime etc.

Maintain pH weekly.

Answer 6

There is only one thing other then the addition of salt that could cause the salt level in the pool to go up and that is the water evaporating and not being toped up wit fresh water.

Answer 7

As part of the process of converting salt into chlorine the water becomes more alkaline ( higher pH ) You'll need more acid than a regular chlorinated pool.