Its not my siphon one that doesnt work its my "hole in the wall" one. and the only reason it doesnt work is becasue i miscalculated the math and the hole is a little too small so all I'll have to do is throttle the pump on down. I think some senior members need to chime in on the overflow Q's because the siphon ones and hole in the wall ones both are functional if set up properly and do not need costant adjustment.
:? :? :? in reply to the first statement that Burstsofenergy made about needing an over flow box, couldn't you just make the siphon hose just 1-2" underneath the surface of the water so that the siphon would act the same as an overflow box??? :? :? :?