I am being put forth an unusal demand, at least I think its an unusual situation. I have 3 kids, and I have 2 large tanks in the basement, they are both covered and I have a dehumidifyer running down there to take out any extra moisture. My mother in law thinks the tanks of such volume create too much humidity and thus a cause for mold. She is willing to put up a large down payment, but in turn i wouldn't be allowed to keep the tanks. My wife on the other hand is not completely opposed to the large tanks and knows how dry it stays around my tanks and is alright with the 2 but doesn't want too many more if any kind of thing, so we are having to decide if we except the house or forever remain in rent.
Plus, your old lady will have a heart attack when she sees the electric bill on the first month after you go salt!