# 2 is a good reason but there's ways to prevent that for the most part uv sterilizer and good micron filters are what I'm going to use and I'm going to have a new fish/sick fish quarantine section in my fish room and I understand not wanting to drill that many tanks I'm sure there's a way to do a self priming overflow box. I'm going to Link my tanks to my new quiet1 2200 till I can afford a bigger one. My walls go up for my new room monday can't wait!!