Wow,

what were the Ph measurements (on the color scale?) My scale may be different from your reagent test.
I have mineral water with a little iron. I have a water softener (works miracles) I don't have to use the iron pellets in the regen tank.

If you let your well water stand a day of so, will the minerals settle out?

Otherwise you may want to get some water for your plants from another source.

Shovelhandle

Good luck, it looks like you're doing well.