We had problems with our pool ladder lightly rising when not in use and lowering when in use. We were worried that over time this might cause wear on the pool liner. So when we opened the pool this year we decided to cushion the bottom of the ladder with a towel tied around it. It seemed to work well - I guess - except now I noticed that the towel has a slight greenish tint and I've been shocking for a cloudy pool.
So my question is - could it be this towel that is contaminating my pool?