Use the smaller pumps, I had130-170-GPH and it was to fast the wawter didn't get a chance to drop out to the nipple. So I went to the 50-80-GPH Water Garden Fountain Pump and everything worked great. One thing to keep in mind is the pumps Maximum Lift (Inches) or head.So glad to see recent additions to this post. I've read a few others and no definitive answers anywhere. I normally use a 2.5 gallon bucket with about 3 feet of pvc tubing with the vertical nipples. This winter I switched to the black plastic pail for watering. I also noticed that even though I drained the water from our system, 2 of the nipples popped right out of the pvc. We got down to -15F recently. Bringing the bucket in really isn't an option for me with the way it's setup. So I'm looking for some other solution.
Question for those that use the pump. I have 2 small pumps, one for an indoor fountain and one for a backyard pond. I've never tried a system like this, can you expand on how you have it setup? Maybe post some pics?
You don't want your water flying out of the hose, just a nice steady stream.