CSI too low?

revitup

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Nov 30, 2019
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Pawleys Island, SC
Pool Size
8500
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
CSI has been trending pretty low, below -.4. Actually -.51 today. My numbers have been very consistent.
Here's todays. Take a look at my logs for previous.
FC = 6.5
CC = 0
PH = 7.5
TA = 60
CH = 290
CYA = 70
SALT = 3200
TEMP = 88
CSI = -0.51
Should I be taking action to raise it? Raise PH? It's been a very consistent 7. 5 to 7.6.
Take some other action? Worry about it at all?
 
Does your fiberglass pool have grouted tile along your water line?

If not, no issues. Nothing to be concerned about.
 
Nope. HP does not matter, only gas fired units need calcium in the water. We do recommend 200 ppm CH for fiberglass pools, helps keep them from staining. You are good there.
SWCG loves a negative CSI, less scale formation to shed during polarity reversal.

Keep your pH in the 7's. All is good.
 
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