ok, will order k2006 kit as soon as I finish here

Not concerned about Copper staining. We bought the house/pool a year ago and the gunite already had some stains. I'd be concerned if I ended up with some huge ugly brown stain taking up the entirety of the pool, otherwise a few stains are just not that big of a deal. My daughter and I are blondes so I really just don't want to end up with green hair this year!

I shocked the pool the other day and thankfully did not see any stains result. The PH is already kinda low (7.2 - 7.4), I've been fighting to get it up to that level... My mistake, I wasn't monitoring the pool as much as I should have as the weather warmed. I seem to struggle with mustard algae at the beginning of the season. Again, that might be my mistake as I wasn't being as diligent as I should. Also have been looking at automatic cleaners (So, any recommendations would be great!) as I've been vacuuming "old school style" and organics would sometimes sit in the pool longer than they should have. Lets just say that I've learned my lesson! I've been running the pump 24/7 for the last week or two, but haven't backwashed more than once a week to avoid channeling in the sand filter. Eyeballs are now adjusted to push water straight out rather than against any walls. The water is in pretty good shape now other than kinda cloudy... I've been brushing it daily and vacuuming twice a week. Seems like the cloudiness is really fine particles that get stirred up... dead algae maybe? Thank you so much for your help and advice. I'll report results once I get the test kit!