Alkalinity

[deerocks]

Second year pool owner. Today tested all my chemicals with Taylor test kit. Alkalinity is 140 with a saltwater pool. PH 7.5, salt 3800, chlorine 4, CYA 60, calcium 400 ( we have a well in upstate NY). After logging in poolmath and reading the articles on water chemistry, I am still confused as to how much to add of muriatic acid! It doesn’t state it. I need to lower the alkalinity, can somebody please shed some light on this? Yesterday my Circapool saltwater generator was all lit up with red lights, due to calcium build up. I had to clean the plates out with muriatic acid. It’s working now. Thanks.

 

[Rancho Cost-a-Lotta]

Lowering TA should reduce scaling in the cell. Lowering TA is not something that happens overnight. Each time you add acid to reduce pH, TA drops a little. Pool Math "Effects of Adding Chemicals" will tell you how much. You can accelerate the frequency of acid additions by forcing pH up through aeration. Allow pH to rise to [7.6], then add acid to reduce to 7.2. This cycle should result in a reduced TA over time. If you have high TA fill water, the process might take longer. Read:

Lower Total Alkalinity

A lower Total Alkalinity level can help a pool owner stabalize their pH increase. We'll explain how to lower TA with a little help from muriatic acid.

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