Hello everyone. This is my first year with my pool. I've been trying to clear it up for 2 months now. I was taking advice from my local pool store until I found this site. After reading pool school, I realized I have made plenty of mistakes, taken some bad advice, and wasted a lot of money. Anyway, I have very bad iron stains and green, semi-clear water. Weeks ago, I tried to fix the stains before passing the 3 criteria of the shock process. I got algae when chlorine was low, and decided to read up on this site and start over by passing the shock process, then addressing the stains. Since then I have been keeping my chlorine at shock level (15) based on my last recorded CYA of 30. It has been 5 days, and I still have not passed the overnight test yet. In those 5 days my water went from dark green, to a very milky green, to a near clear green. It seems that many on here achieve a milky blue color first, then it clears. I hate to assume anything, but it seems that maybe the metals in my water are causing it to look clear green. I know I still need to pass the shock process, but I just feel like the opportunity for my water to turn blue has passed. I read that adding a sequestering agent should take the green tint out of clear water. Is it ok for me to add such a thing while keeping my water at shock level? Also, if I am able to add a sequestering agent now to blue up my water, will it have any affect on the AA treatment I plan on doing down the road to remove the stains? Thanks for your time and advice!!