How are your fish doing? Iron is a heavy metal that you do not want your fish near. I would by 5 gallon bottles of spring water and use some additive to help get rid of the heavy metals. I would change the water that left over 50% water in the tank before filling it.
I moved some tropicals to my GFs house just down the road from me, both of us have wells, her water has a lot of iron we found out which killed all but a couple fish.
I moved some tropicals to my GFs house just down the road from me, both of us have wells, her water has a lot of iron we found out which killed all but a couple fish.