Hi All,
While trying to educate my family with pools on the BBB method my uncle informed me of his problem. He has an ag pool and he says his water is a little "murky". He also stated he was using copper sulphate or something along with a little chlorine last year but has switched solely to chlorine this year. He said he bought a bucket of it and added it here and there (talking about the copper stuff)

Anyway, my question is does anyone know what he's talking about and if so does it need to be removed before control of the water can take place? I plan to test his water tomorrow so I will post all the details then.

Thanks!
Joe