I ordered 5 Nipples on eBay the other day to make a homemade waterer but I'm having second thoughts on how to do it. I was going to attach PVC pipe to the bottom of a 5 gallon bucket and make it come out left and right as a straight pipe with the nipples spaced evenly on it but with that freeze in the winter? Obviously I'll have a fish tank heater in the bucket but will that keep the pipe below warm enough to not freeze or should I just put the nipples directly on the bottom of the bucket? I don't want to mess it up lol