for having a wife who isn't a fan of fish I'd say your rather lucky with 7 tanks. I'm at my 2 tank limit and my gf likes the fish. I'm fighting to convince her when we get moved into our new place and I set up the 150 to let me keep both 75's I have up and running now. I even offered to give her one of the 75's to put what she wants in it. that only got her to say that's fine but the other 75 needs to go still 
