lordlion, dude, if your story holds water, you have a lot of learning to do. that's not a knock, by the way. if your ma has it like that, and she's cool forking over all the bacon it's going to take, good on her. i wont sit here and hate, but i will tell you that maybe a 125 is more reasonable for someone who thinks a canister filter will suffice on a tank that big with a bioload like that and a stocklist that obscene. i don't see this coming to fruition, but in case this is legit, a 750 gallon tank is retarded huge. get a 125 or 240 to get your hands wet, learn some things about the hobby and what it's like to take care of moderately sized tanks. rather than getting the floors reinforced and getting an imaginary canister filter, get a smaller tank to figure out this hobby and with the change, go throw some dubs on your car or something.