Ok husband brought home a 50 gal barrel and my son wants to make a gravity water for the chickens, it will flow into a trough he made out of PVC pipe. Ok so we are super dummies here and we can't figure out why it won't stop over flowing. He has tried different hoses, pvc pipes and fittings, he doesn't want to go the nipple route yet HELP he is super frustrated and everything we have tried has failed. We suck!!! Our brains don't seem to work!! The pictures are the barrel on its side( he wants it up right when done) and of the trough my son made Thanks for any help!!