CSI-vinyl pool

adm525

Well-known member
Apr 23, 2017
103
NC
Pool Size
13500
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
CircuPool Edge-25
Am I correct in thinking that my vinyl pool doesn’t need calcium added? Right now it is 25 due to new fill water and my CSI is -1.43. Do I need to worry about CSI? I do have a SWG. Thanks!

FC-3.5
CC-0.5
PH-7.2
TA-70
CYA-60
Temp-82
 

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2014
33,016
Texas, San Antonio/Marion, South-Central Area
Pool Size
17888
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
Am I correct in thinking that my vinyl pool doesn’t need calcium added?
You are correct. No plaster products in liners. Your main concern is a low pH that could potentially lead to corrosion around the pool or equipment. A pH of 7.2 is fine for a while, but if it climbs to the mid 7 range that would be ideal season-long.
 
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adm525

Well-known member
Apr 23, 2017
103
NC
Pool Size
13500
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
CircuPool Edge-25
Ok thank you! I’m yes I’m working on getting it up, went from 6.7 yesterday to 7.2 today!
 
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