Pool history here: topic47425.html
I have the pool nice and clear but I'm worried that something may be creeping in. The pool brush and vacuum are stained in a way that looks like a brownish algae is growing on them. At first I thought it was just a problem with rust or something else but the vac doesn't seem to have any metal where the stains are.
I soaked the tools in 50/50 bleach (6%) and pool water (CYA 55) for a couple of days in an open bucket in the shade and nothing went away - if anything it got worse. It did rain during this time a couple of times but the bucket smelled about the same as when I started - no I didn't check for FC/CC's when I dumped it!
I also see some potential issues in the pool which I will check with an OCLT tonight and if needed run up to shock levels - but the tools lack of response to the 50/50 bleach solution has me freaked out. 30000ppm of FC (calculated from 3% expected strength) should have been sufficient for most anything!
Here are some tool pics...
At one point I saw brown stuff accumulate on the steps - but that hasn't come back - however the color of the stains on the tools looks similar:
Ideas on what to do with the brush and vac? They haven't been back in the pool since I determined this was going on.