I am new to this and this will be my first winter. I installed a rain barrel that I just fill with the hose. I can run a hose out there every few weeks in the winter to fill. Then I attached it to a pvc pipe installed horizontally with horizontal nipples. It’s gravity fed. My plan is to use a bird bath heater in the barrel For the pvc pipe, I installed a hose on each end, running to and from the barrel. My plan was to install a small pump to trickle the warm water continuously. I have heard I can get a temperature controlled extension cord or plug to use so the pump only runs below freezing. I also think the bird bath heaters or livestock tank heaters are controlled by temperature as well.
Has anyone tried this approach. That way , I can have several weeks of water always and all o have to do is check each day that the pump and heater don’t fail. I will most likely have a spare on hand.