Let me start by saying that I don't have a metal problem.
I've been reading a lot of forum posts on metals and it seems the standard response is maintain levels of sequesterant (cost $$$) but you can't actually remove the metal from the water. I've seen several posts of people trying various products that supposedly remove the metals and it seems the results range between poor and useless. Certainly metal is removable - reverse osmosis if nothing else (appreciate that removes _everything_ and lots of additives would need put back), but what about electrowinning? (Electrolysis to plate the metal out of the water)
Has this been tried and ruled out? Is there something I'm missing about the chemistry that would prevent it from working?