Hey how's this?
Originally I was thinking of doing an overflow like that, but since its just a plastic tub I think drilling a hole will be easier.
Get a canister filter. Problem solved
lol, that's my back up plan already got an extra canister filter ready. Just thought that this tank being outside the extra water from the sump will help keep the water temps a little more stable.
edit: I'm thinking about running the sump inside the house so I don't have to worry about electrical stuff outside. Don't know why, but there are already some nice holes in the wall that are the perfect size to run PVC pipes.