High CYA: An Upside?

[joliecharlie]

Others can answer more technically I feel sure. If you are concerned with fading, I haven't noticed any with swim wear, my liner is about 4 years old and has some slight fading but I would guess that to be normal, we also keep our pool open year round.

[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.

[cheshamjim]

If you are concerned with fading, I haven't noticed any with swim wear, my liner is about 4 years old and has some slight fading but I would guess that to be normal, we also keep our pool open year round.

Fading of swim suits and liner is precisely what I am concerned about. Your experience over time with high chlorine is a great insight and I thank you for sharing. I'd still like to hear an expert opinion, though.

-Jim