What are these Flakes?


Well-known member
May 24, 2020
Melbourne, FL
OK...from other threads I can assume they are calcium flakes. But strange to me since the pool is balanced. Normally my TA sits at around 70 and I never see this even as the pH drifts up to a 7.9. But I added some Baking Soda a few days ago, more than usual so I ended up at 90 TA. Thinking I will keep the pH down around 7.5 until TA come down a bit.


Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
Bedford, TX

I show your CSI to be positive and if the pH goes up at all it will be more positive..

Try keeping you CSI at -.1 or more negative.

I get the same thing if I let my pH get too high for too long.


Jim R.
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