Hello, This seems like a great idea! I am in PA and it is already freezing! We have a vertical nipple set up, but are having problems with freezing. I think we are going to transition to the horizontal nipples, but has anyone had any experience with the Hydor 50w Hydrokable Substrate Heater, 20' - for Aquariums 16-33 gal and vertical nipples? Will this prevent them from freezing as well? Also, I read a review on amazon that someone used this heater to heat a 6gal fish tank and that it got hot to the touch. They did say that they did not have it fully submerged, but I also noticed it was for a 16 to 33 gal tank. Do you think this will this get too hot for a 5 gallon bucket?