Copper in water - ok to use bleach?

[mccato]

OK, thanks for that explanation. I understand; except for one detail. My pool is crystal clear and has been all summer. I saw green algae on the skimmer last week, but I brush it every day and have not seen anymore since. I'll do as you say and keep a constant check on it.

Can we swim in a pool with 8-15 ppm chlorine?

Thanks again!

[aylad]

With a CYA that high, yes, you can swim in it--it would be the same as swimming in a pool with lower chlorine and CYA, proportionally.

Janet

[mccato]

Thanks, Janet! I wish the pool stores in my area had as good an understanding of CYA as you guys do. I appreciate the help!