Well, Steve, they won't as far as I'm concerned. I've never put them together and I probably never will. Yes, I'm toying with that thought, but it probably never happen. I'm really not the guy who's risking lives of my own pets (sorry for the word: "pets"). I know Amon quite well - now I'm trying to know Nefri better. I spent huge amount of money to get Nefri's tank (she has the biggest) - and if I was reckless I wouldn't even bother... Really, trust me.