Split by moderator from HERE. Please start a new thread for your own questions. Thanks, jblizzle
I second the OP, just emptied out my pool (42.000gallons) and I'm having similar problems.
Probably extreme high PH-values last season causing this.
However, nothing seems to be able to remove this.
Question though, by filling it up and regulating the PH to the down-side of 7, would that do the trick over time?