I am considering setting up PVC pipe with nipple waterers. I have 6 different breeding pens side by side and plan to run one long piece of 1/2" PVC pipe through all of them and attach nipple waterers. My question is this:I have a 55 gallon plastic barrel currently set up to an auto waterer bowl. Would that barrel be enough to "pump" the water by gravity over 25 ft. of PVC pipe (this is what it would take to cross all the pens)? The barrel is about 2.5-3 ft. off the ground.