[chevyjaxon]

good idea its ugly but it serves a purpose and its better than banging you head against the wall wasting countless days babysitting the valve for the proper flow
remember there are variables that imoe constantly affect the flow rate of your return pump and an overflow compensates for these variables BTW if generating a reliable siphon is a problem i picked up a neat little device i hooked to my overflow intake tube it starts the siphon for you even if the power goes out and you loose your siphon when the power comes on so does it it looks like an air pump only it sucks water through an airline tubing 3.5gph works great got it at big als for 30 bucks