Seeing white flakes (calcium?) in pool after 10 years of never having them.

lborne

Well-known member
Jun 29, 2009
467
Vero Beach, FL
All chemical levels have been the same. The SWG cell was replaced 2 years ago. I only started seeing these white flakes after adjusting the TA.
My numbers were:
Salt = 3600
Chlorine = 5
PH = 7.8
CH = 330
TA = 20

So I added enough baking soda to get TA to 60. Then added about 1/4 gallon of muratic acid. 2 days later, I saw the white flakes. Anything I can do to get back to where I was before? Should I lower my TA back to 20?

Thanks
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
35,937
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
SWCG can create calcium scale in the cell. When the polarity reverses, the scale sloughs off.

It is best to keep your CSI - Calcium Saturation Index (CSI) - Trouble Free Pool between 0 and -0.3 to keep the SWCG from scaling up. Use Poolmath to determine your CSI.
 
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