I recently purchase a modular home in upstate NY. It is on a slab with a concrete foundation and crawl space. I know I need to drain the pressure tank and all pipes and put anti freeze in the toilets, traps, etc. My concern is the water pipe that goes from the pressure tank to the deep well. It is a plastic pipe that goes about 10 feet and then goes down in a hole (recessed plastic bucket) in the slab and then from there of course underground to the well casing. I have installed heat tape all along this pipe from the pressure tank to the end of it in the hole. Will this be enough to keep it from freezing and giving me problems or do I need to pull apart the pitless conncection in the well casing to drain it? Thanks for any advice.