pH balanced at 7.5 while TA is 200ppm in a SWG pool

prettyblues80

Active member
Jul 15, 2020
33
Paso Robles, CA
What is the best way to lower TA when the pH is balanced, muriatic acid or dry acid? And will lowering my TA lower my pH too?
Test results as of 7/27/2020:
FC: 7ppm (coming down from SLAM)
CYA: 75
CC: 0
TA: 200ppm
pH: 7.5
 

prettyblues80

Active member
Jul 15, 2020
33
Paso Robles, CA
@mknauss my SWG doesn't seem to be scaling up, but there are water spots on the outside of my pool. That's clearly a cosmetic issue and probably would happen anyway. Should I lower the pH to 7.2 (bottom of the range) or just leave it as is?

BTW, here is a picture of my beautiful water thanks to your excellent guidance.
20200727_103647.jpg
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
32,549
Laughlin, NV
When your pH reaches 7.8 or 8, lower it to 7.4.

If the SWCG starts to shed any calcium flakes, then lower the TA. Otherwise, no real issue in leaving it be.
 

prettyblues80

Active member
Jul 15, 2020
33
Paso Robles, CA
@mknauss what should I be aiming for on FC for my SWG pool? I have seen 2-4ppm ranges as the recommendation, but pool math offers a range of 4-11ppm?

And what should I do with the mason jar of sodium bisulfate I have dissolving in pool water that I shouldn't add to my pool now?
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
32,549
Laughlin, NV
Use up the dry acid. Just do not use any more once that is gone.

Follow the FC/CYA Chart for SWCG pools.

With your current level at 7 ppm, that is great place to be. Set up your SWCG to create 3 or 3.5 ppm FC per day.
 

prettyblues80

Active member
Jul 15, 2020
33
Paso Robles, CA
@mknauss, this is probably a stupid question, but I see in my manual that my SWG generates 12 grams/hour. How do I convert this to ppm in order to know how much I should run the generator? Of course I will test it to make sure my FC doesn't fall out of range again.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
32,549
Laughlin, NV
In Poolmath, there is a drop down list of SWCG. I believe yours is the Intex Krystal Clear. It matches your 12 gm/hr which is 0.62 lb/day.

What is the volume of your pool? Please add that to your signature.
 

prettyblues80

Active member
Jul 15, 2020
33
Paso Robles, CA
@mknauss I found where you were talking about in Pool Math. Under "Effects of adding" you can select the SWG and determine how much run time your SWG will produce in PPM increase! AWESOME!

I have my SWG running now. I will retest before I head to bed tonight and determine how much more it needs to run to keep me at 7.