I've got an AquaC Remora with the MJ1200. I was told it was good to 75 gallons. It currently sits on my 37 gallon, and has worked great. I'm upgrading to a 75gal, with a 30gal sump, although the sump won't be filled of course. My display will have rock and sand in it, and the sump will have a fuge as well. So my question is will the Remora be able to handle the setup? I was thinking of upgrading to a Mag 3 instead of the MJ1200 thinking it might help. Any ideas? I'm sort of torn. She it stay or should it go?