Swg pool extreme high TA

[gonefishin]

Hello all,

I've been a TFP person for many years now. My friend has a swg plaster inground pool that has a TA of 360. On the pools that I have owned I have had to bring my TA down before, and did this with success using the drop (ph) and aerate method. But my levels were never this high.

I will get a full set of measurements Monday, but I'm wondering what you suggest for such a high TA. Right now my thinking is just approach it with systematic ph drop/aerate cycles is all we can do.

Ph is currently very high 8.2 and calcium is 200, cya is 20. We'll certainly address cya and other issues, but the TA seems super high

His city water currently has a TA of 280, calcium of 80


Suggestions, thanksl

 

[Mr Bruce]

If the fill water is significantly lower in TA, you might get a little head start by exchanging some water before adding CYA. If the fill water was low CH and this was a plaster pool, I wouldn't bother though. It's just acid over time with aeration like you said to make it go faster if you like.

e: Relevant article you've probably seen but for anyone else Pool School - Lower Total Alkalinity

 

[gonefishin]

Thanks for the help!

He's got a Memorial Day party coming up, I think I'll have him start after that.

I've always used liquid when adding acid to my pool, he wants to use dry acid. Does anyone have thoughts, suggestions, precautions about dry acid Vs liquid?

Thanks!

 

[duraleigh]

Use the liquid. Acid leaves an unwanted sulfate residual and you will be needing lot's of it.

 

[AimeeH]

And just to pile on here, I don't see the need to wait until after a party if adding acid to drop to 7ish. I would think that party swimmers will help with the aeration

 

[gonefishin]

Will do, thanks