What's the association between chlorine and CYA?

[MaryLee]

Well, Cl is an unstable compound, and it happens to be very unstable in sunlight because its absorption maxima is around 290 nm. That's the UVB range that gives you sunburn. So, if you could erect a huge UV shield over your pool, you wouldn't need stabilizer.

That's why indoor pools don't need CYA.......right?

[gonefishin]

That's why indoor pools don't need CYA.......right?

Right. The indoor pools aren't exposed to direct sunlight...so they don't benifit from the CYA.

'least that's the way I read it

Michael...

thanks for the comments. While doin' some reading I found it just as fascinating that chlorine is effected by high/low PH readings as well as CYA and sunlight.

It's actually a good feeling to know why my water is clear and clean. I just hope it provides me a slight leg up should a problem come up


thanks,
dan




dan

[mwsmith2]

That's why indoor pools don't need CYA.......right?

Absolutely correct.

Michael