Doc,

I'm willing to attempt this following your direction and document the process. My two concerns are that I don't want the pool to be out of service for too long (we're anxious to get in our first pool and the weather is rapidly warming here in Vegas) and I do want to eventually eliminate all the stains in my shiny blue fiberglass pool. You say your guess is that I'll not be able to remove 100% of the stains with your process and I can live with that through this experiment, but I do want to find a way to remove them all before the end of the season. I recently received my K-2006 upon your recommendation, and am currently keeping my pH low and aerating to lower my TA. My calcium is at 600ppm and will rise due to high calcium in my fill water and high evaporation rate (dunno if that makes any difference). I'm willing to start whenever you are, again provided that the pool is not out of service for an extended period.