RO done & levels look good — TA question

GinaGina

Member
Aug 4, 2019
20
Phoenix, AZ
We had RO done Wednesday and most of the levels look great and our water is crystal clear. And we feel better for not having wasted 80% of our pool water. :)

However, our TA is at 100. We’re planning to wait until this evening (to give it 48 hours to settle), but should we then address the TA? Pool Math says to use Borax to lower it? The pH is 7.3. We’ve never used borax.

Thanks for any guidance. ~G
 

IceShadow

Gold Supporter
Jun 8, 2019
1,072
Milwaukee, WI
You don't lower TA with Borax. You raise pH with Borax. No reason to use that product unless your pH is low.

You don't have to worry about the TA being high. It just means your pH will rise more quickly naturally. When it does you will add acid to lower the pH, which will also lower the TA a little. You have to know what your TA is when you add acid to lower the pH so you know how much to add, but it will settle itself without you needing to do anything. :)
 

GinaGina

Member
Aug 4, 2019
20
Phoenix, AZ
You don't lower TA with Borax. You raise pH with Borax. No reason to use that product unless your pH is low.

You don't have to worry about the TA being high. It just means your pH will rise more quickly naturally. When it does you will add acid to lower the pH, which will also lower the TA a little. You have to know what your TA is when you add acid to lower the pH so you know how much to add, but it will settle itself without you needing to do anything. :)
@IceShadow Thank you! I see now how I misread the PoolMath info. The water is so nice I’m relieved I don’t have to add anything to adjust. :)
 

YippeeSkippy

Mod Squad
LifeTime Supporter
Jan 17, 2012
12,054
Evans, Georgia
TA of 100 isn't out of line and doesn't need to be dealt with unless your pH is a problem?

With a plaster pool you can see what your CSI is by using PoolMath. And PoolMath lets you "imagine" how a TA change will affect your chemistry.

Maddie :flower:
 

GinaGina

Member
Aug 4, 2019
20
Phoenix, AZ
TA of 100 isn't out of line and doesn't need to be dealt with unless your pH is a problem?

With a plaster pool you can see what your CSI is by using PoolMath. And PoolMath lets you "imagine" how a TA change will affect your chemistry.

Maddie :flower:
@YippeeSkippy Maddie Our pH is good. (See above.) PoolMath has been very helpful. Thanks! ~G
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
23,045
Laughlin, NV
With a TA of 100 your pH will not be at 7.3 for long.

Do realize you 'waste' way more than 80% of your pool volume each year to evaporation -------