So it's finally time to upgrade my 40 breeder to a 120. It's going to be an sps tank so I want tons of turbulent flow. Only problem is I can't decide on a return pump. It needs to be an internal pump as i don't have tons of room in the stand after the 40 gallon breeder sump is in place...It also needs to be affordable. I want a reliable pump that doesn't break the bank. Any ideas on gph and models would be greatly appreciated. Thank u in advance