Lower your pH to 7.0-7.2, add a dose of Polyquat 60 algaecide (the only algaecide we recommend--the cheap stuff isn't the same and will create more problems than you already have), maintain your chlorine levels at 3-5 ppm, and then add the Metal magnet. Then you can do one of two things--either keep the chlorine low and keep adding metal magnet as the chlorine breaks it down, or put a trichlor puck in your skimmer and superchlorinate the water right before it hits your filter, and hopefully the metals will drop out on your filter so you can wash them away when you clean your filter.
Anytime you have metals in the water, high chlorine + high pH are gonna make them precipitate and create that Dr Pepper (or green) water. So the question becomes: do you want to try to remove the metals, or learn to manage the pool with them in the water (or drain and refill using a non-well source)?
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