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Trouble balancing Alkalinity and PH in my salt water hot tub


TTUHoopsFans

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Hi everyone, I am new here.   

I am having a heck of a time balancing alkalinity and PH in my 350 gallon Dr. Wellness X-6 hot tub.  I’ve had the hot tub for about a month now and I’ve drained and refilled it twice already.   I just filled it up and I spent all day yesterday getting the PH down from 8 to around 7.2-7.4.  I was at alkalinity of about 100 when the PH was 8.   I then began the process of adding salt yesterday and today (it has a prozone CSS5 salt system).  I just checked PH and it’s now 7.6 and Alkalinity was low at like 60.   If I add alkalinity increaser, I know it is going to raise my PH to 7.8 or 8 or higher.  How do I get these balanced?  I’m just going in circles adding alkalinity increaser and PH decreaser.  The hot tub manufacturer (LPI) said to shoot for 100 alkalinity and PH of 7.4-7.5 since I have the salt system and was having a phosphate calcium issue when the PH got too high.  Thanks in advance.  

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Sorry buddy, not familiar with that salt system, and not a fan of any.

Water balance is a combination of calcium hardness, ph, alkalinity, and temperature. What are your readings right now?

Some systems require lower than normal ch and alk because the cell produces a very high ph/alk when generating chlorine, which leads to scale on the cell. I would check the salt system manufacturers recommendations.

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