More on my scaling issue & rising PH

kellyfair

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TFP Guide
Jun 29, 2016
5,457
Tampa, FL
Pool Size
7500
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
CircuPool Edge-25
Hi folks! Today’s test results:

FC 5
PH 7.8
TA 60
CH 250
CYA 30
Temp 92
CSI - neg 0.10

We had a monsoon yesterday evening which lowered pool temp a bit, and probably increased PH which was 7.5 on Tuesday. Interestingly, I tried scraping scale off liner with fingernail - no dice. But the inside of my skimmer is smooth, as is my weir door. Forgot to check that before.

Daughter is home this weekend so we are going to tackle the sand filter. I’ve been running on recirculate since I figured out where all the sand came from. I was being pretty aggressive in lowering my PH, but now my TA is at 60 so I’m not sure I should continue with the MA without raising TA some.

My CH came up 25 points, but still isn’t high at all, in my mind.

Your thoughts?
 
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