sweet i too am thinking of doing the same set up next week when i get my 75 gal. i'm planing on moving my rock that i hace now along with a sand bed and put it into a 10 gal tank and turn my 30 gal into the sump/fudge and run the tank while the new tank cycles with new rock............one other question are your baffles solid? do they have the for the lack of a better work notcher at the bottem to make it stand higher theb the other too?.....also i read that ya left the paper on the seal?? how is that gonna affect the tank? or will it not??