190 gal spa. I have my pH in range, but TA is low. Is that a concern? If I try to raise my TA, my pH will rise. Which is more important to focus on?
pH and TA
- Thread starter Kathe
- Start date
What are the test results? If your TA is at least 50ppm it’s in the normal range.
- Jun 1, 2018
- 13,747
- Pool Size
- 26000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
Your ph will rise in a spa- there’s no stopping that unless you don’t use it or run the pumps.
With a lower ta it just won’t rise quite as aggressively.
As @Bperry said - any ta 50 or above is fine. Some find they are fine at 40 & do not experience “ph bounce” YMMV
Adding borates (boric acid) can also help moderate ph rise a bit.
Once ta is where u want it (50ppm for many) you then want to then only lower ph to mid 7’s or a scootch higher - big dips will drop the ta. Then you’ll be adding baking soda & back on the merry go round.
Ph in Mid to high 7’s is totally fine - even hanging at 8.0 for a little bit is ok. So long as ph spends most of its life in the 7’s you’re good
With a lower ta it just won’t rise quite as aggressively.
As @Bperry said - any ta 50 or above is fine. Some find they are fine at 40 & do not experience “ph bounce” YMMV
Adding borates (boric acid) can also help moderate ph rise a bit.
Once ta is where u want it (50ppm for many) you then want to then only lower ph to mid 7’s or a scootch higher - big dips will drop the ta. Then you’ll be adding baking soda & back on the merry go round.
Ph in Mid to high 7’s is totally fine - even hanging at 8.0 for a little bit is ok. So long as ph spends most of its life in the 7’s you’re good
pH is 7.5, TA is 75. I thought TA had to be 80-120.Your ph will rise in a spa- there’s no stopping that unless you don’t use it or run the pumps.
With a lower ta it just won’t rise quite as aggressively.
As @Bperry said - any ta 50 or above is fine. Some find they are fine at 40 & do not experience “ph bounce” YMMV
Adding borates (boric acid) can also help moderate ph rise a bit.
Once ta is where u want it (50ppm for many) you then want to then only lower ph to mid 7’s or a scootch higher - big dips will drop the ta. Then you’ll be adding baking soda & back on the merry go round.
Ph in Mid to high 7’s is totally fine - even hanging at 8.0 for a little bit is ok. So long as ph spends most of its life in the 7’s you’re good
- May 3, 2014
- 58,451
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
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