I have the following items to work with 8 in pvc pipe ( the kind thats for main water lines). I cant afford metal pipe, I need to heat a 24 foot x 16 foot greenhouse, and have a lot of stuff to work with but no metal pipe. My question is can I use this or should I try something else. We have a wood heater but it would not hold heat for the night. Anyone have any ideas that are extremely cheap. thanks
