Alkalinity at Closing

Edge70

Member
May 16, 2021
15
Belleville Ontario Canada
Pool Size
22700
Surface
Vinyl
Chlorine
Liquid Chlorine
Hello, looking to close tomorrow and my total alkalinity is 88, ph 7.8,. Pool company recommends bringing alkalinity into the 150-175 level for closing. They tell me that have alkalinity too low can lead to wrinkles in the liner. Please advise. Also, Calcium Hardness is 100 which is a bit low. Is this that important to address on a vinyl liner pool? Thanks for your help.
 

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2014
33,827
Texas, San Antonio/Marion, South-Central Area
Pool Size
17888
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
Vinyl pools require no calcium. The TA is fine at your 80 - 90 range, and certainly doesn't need to be increased to the numbers they are recommending. The cold water will cause the pH to rise enough as it is without help from an elevated TA.
 
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