Looking for some advice on a new pool startup with apparent metal staining. It's been running for about 3 1/2 weeks. When I filled the pool, water had a VERY dark green/brown tint to it (mostly brown). Plaster guys and others have said that my neighborhood is on well water and it probably had metals.
I ran my quad DE filter and followed local pool store advice on chems. Shocked it twice (5 lbs each time), ran pucks to get chlorine up, and muratic acid to get alkalinity and ph right. My levels are looking good on FC, CC, PH, and Alk and the water has been crystal clear. All brown color in water completely gone. Figured it was sediment and DE knocked it out. The next numbers I had planned to address were CYA and Calcium which are both very low to non-existent.
Unfortunately, by the end of week 2, light brown staining started up in the deep end floor and about 1 foot up the deep end walls. The staining has worsened a little in the past 1 1/2 weeks but it's not expanding aggressively. Still, it's bad enough that I figured I needed to deal with it. New pools shouldn't look ugly.
I did the vit C test by putting a sock with a handful of C on the deep end floor. Left it for 30-40 minutes. Went back and it was had a dark gray/black spot where the sock was. Figured it wasn't metal but went back a few hours later and the black was gone. Also, turned out the brownish stain was gone in that area also. I figured that it was metal and I got on with ordering everything I'd need per AA treatment post.
Soooo, I'm about to get everything in and start this process. I do a little more research and see several posts that warn that vit C test yielding black spot means copper and you shouldn't do the AA treatment. (oiy!)
I was hoping you guys would say that it would be ok to go forward with AA since the black went away and stain was removed. Mainly because I've already ordered my stuff and I've been getting the chlorine down the last few days. However, I sure don't want to take a small problem on my nice new pool and turn it into a big one.
So what would you do?
All help greatly appreciated.