I am in the process of building a sump out of a 20 long for my 57 gallon DT (Center Overflow) I am already really crammed for space as I have an overly large skimmer that I am going to be running. My problem is the syphon with power loss, I may be able to come up with enough room in the 20 but BARELY. My question is could a hole be drilled into the return pipe inside the overflow box somewhere so it would break the syphon? This makes sense in my head, but will it work?