Looks about right, why not buy a used sump on here or CL that way we can see it first.
That's the plan, once I get a better idea of what I'm looking for.
Wiggles92 said:You don't need to buy a pre-made sump if you don't want to drill the main aquarium; you can just use the 55 gallon as the sump for the 75 gallon. I would do something along the lines of what Cooterbrown described except that I would add a baffle & some foam/mesh around the return pump to help keep any debris & chaeto from getting sucked in.
Its my understanding that I can't drill the tank. And the original plan was to get a 29 tall at Petco and make a sump out of that but, again, because it can't be drilled, I was advised to go pre-made to avoid a tacky PVC mess. I have no clue what it would take or look like finished...
I'll keep poking around. Thanks for the help so far guys!