Will CYA harm liner?

94ukgrad

Member
Jun 19, 2010
14
I added granular CYA to my skimmer yesterday and I noticed this morning that some of it has gotten by the sand filter and is sitting on bottom of pool. Will this harm my liner? Also, shouldn't the sand filter caught all of the CYA?
 

woodyp

Mod Squad
TFP Expert
LifeTime Supporter
Apr 17, 2010
10,350
East Texas
I'll give you the same advice I was given-------------and followed! CYA has/is a mild acid and you need to vacuum it up and run it back through the filter. In a Perfect World, the sand filter might have done it completely.
 

94ukgrad

Member
Jun 19, 2010
14
woodyp said:
I'll give you the same advice I was given-------------and followed! CYA has/is a mild acid and you need to vacuum it up and run it back through the filter. In a Perfect World, the sand filter might have done it completely.
Thanks for the advice. My problem is that I will not be able to vacuum pool until I get home (10 hrs). Will the CYA damage my liner in the meantime?
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,880
Silver Spring, MD
It probably won't, but it might. With a vinyl liner, there can be very minor damage, that isn't visible, which shortens the life of the liner. If a pile of CYA is sitting in once place it is most likely to cause damage. If there are individual grains here and there, it is less likely. If it is getting moved around then things are probably fine.
 

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