Without knowing too much about the system, we were sold the Permasalt system in our new pool. After only one week or so we already have stains at the water level of the pool and I have to say I do not understand the system. I have owned a chlorine pool before with no problem. How can I come back from this? Is there any way to reduce the copper levels without emptying the pool? We JUST filled it. We have a 27 x 54 above ground pool.