I partly drainewd my pool a couple months ago to lower my CYA and I took some pictures at the stains.
I'll have to post those, as the stain appears to be on parts of the plaster that hasn't worn away / degraded. So you may, in fact be correct.
Huh, whattayaknow.
I'll have to post those, as the stain appears to be on parts of the plaster that hasn't worn away / degraded. So you may, in fact be correct.
Huh, whattayaknow.