Hi! I recently started getting our pool ready swim in for the summer. We have a 16 ft x 48in summer waves pool. Monday I started balancing the ph levels and the alkalinity.. brought my water back on Wednesday and they gave me something to lower the PH, an algaecide, and chlorine. I put 3lbs of low n slo in for the PH, 3oz of algaecide because the pool felt slippery and slimy not because it was green, and a chlorine tab. I noticed it start to slowly turn green so I shocked it and it went from green to a red/brown within 30 min and I could no longer see the bottom. I took the water back in to be tested and they said all of our levels were right where they needed to be but 0.1 showed up for iron. I’m at a loss at what do now. PLEASE HELP!