Muriatic Acid did not lower Alkalinity

Problems relating to pH and total alkalinity.
Increase ph, increase TA. Reduce pH, reduce TA.
pH chemistry advice and techniques for the pool.
Pool Newbie
Pool Newbie
Posts: 6
Joined: Mon 29 Aug, 2016 18:38
My Pool: Rectangular, 23K gallons, 60 GPM pump, Hayward C17502 Cartridge, Salt Based

Re: Muriatic Acid did not lower Alkalinity

Postby andre747 » Fri 09 Sep, 2016 10:35

Thank you. I'll raise CYA to 70-80.
The muriatic acid is definitely hydrochloric 31.45%
Is your CH of 4 Chlorine? YES. and how do you maintain it. Maintained by the SWG Aqua Rite set on auto at 30.
Is Your hardness, calcium hardness? YES

Water is very expensive here but we'll consider replacing some of it. How much of the 23,000 gallons would you suggest?

Thank you for your help.

Swimming Pool Superstar
Swimming Pool Superstar
Posts: 997
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Muriatic Acid did not lower Alkalinity

Postby Denniswiseman » Fri 09 Sep, 2016 12:51

Don't raise the CYA untill any drain and refill is done
You may wish to give Muriatic acid another go as your previous dosing may have thrown things haywire. Test before doing it and the test the next day to see the difference
If you are draining I think 2/3 of the water

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