Haven't had any problems at all with/without metals. For some I suppose this is an issue, but for me it's not. I have had copper in contact with my water and no effects on enverts, or any measurable amounts in water out of the ordinary.
After doing some research it looks like I am staying with 220V systems. But will look to seperate the centrifigal drives from the motor so that it's shaft driven. This will minimize the amount of parts that need to be replaced. Either it will be the pump side or the motor side now. Submersibles just don't have the balls to move what I need moved.
Thanks for the help.