High CYA: An Upside?

[prh129]

Actually I think there was a mistake in Watermom's response - I think she meant "it will show you how high to shock based on your CYA level" not chlorine level.

I believe that the higher CYA level will bind up more of the free chlorine so a 25ppm chlorine level with CYA of 100 should not damage a liner as 25 ppm chlorine with 0 CYA would. I'm not 100% sure of that though but it makes sense - if you have to have a higher Cl level to keep things sanitary then the amount required to cause fading would have to be higher as well.

Peter

EDIT BY WATERMOM -- Peter, you are correct. I did mean cya level. I corrected my post above. Thanks for catching it.