greenhouse heating with hot water tubing
Hello, I am thrilled to have found this AWESOME forum, and have spent the last couple hours poring over previous postings. I am planning to build another greenhouse (double poly hoophouse), approx. 16x75 ft, and am considering heating it using some kind of tubing (1/2" black poly?) in the ground with a hot water heater. I've read that this may be a very efficient way to heat a greenhouse, as the heat gets to the roots of the plants and the greenhouse can be maintained at a lower air temperature for a given level of growth. Does anyone have any experience with this method of heating? Do you think it would be an improvement over air heating systems, as far as saving on energy? Any concrete suggestions as to how to install such a system? Thanks for any advice.