I have limited space under my new tank and the only place I can put a fuge in is in between the pump and the cabinet door. That could be a problem if I have to remove the pump. My plan is to use a 5 gallon bucket with 5" dsb and cheato with a floodlight flourescent on top. Is there a bulkhead I could use on the curved surface of the bucket? I would like to use a small pump in the sump that goes to the bucket and use the bulkhead with pipe for a return.