Before I became aware of this forum (and boy I'm glad I did) I was actually thinking about going with an ionizer. So I added an algeacide with copper in it and even last summer I added the same thing. The little bit of copper in the algaecide last year really cleared up my pool so I thought I was doing the right thing by using the same algaecide this year. So the copper came from the algaecides that I used. I also used a Pool Frog system the last 2 years.

Then I came across this great site. No more copper for my pool.

Thanks for your help.