Scum line below waterlevel, won't scrub off

[duraleigh]

Two miracle drugs, Chlorine and Persistence, may very well get that stain off.

I doubt anything will remove it immediately, but trying a few things and the continued exposure to the Cl in your water will probably minimize it to an aceptable level...maybe even make it go away.

I have seen several products recommended here on the forum but I have not tried any of them. Others will be along who have.

PS - Nice work on your water...numbers look good.

[poolrx]

Have you tried the Mr. Clean Magic Eraser by chance? I get the black film on the skimmer box and it takes it almost completely away. Might be worth a try you haven't already...