A propain heater should be fine, just be careful with the fire hazard, and make sure that it is dark when it is supposed to be, meaning not even a pilot light should be seen by your plants.
Adieu
BlueBear Reviewed by BlueBear on . advice on non-electric heating in an unheated garage Hi all, I have a detatched garage. It's walled into two 10x20 ft individuals garages. It's in a stinky alleyway next to several HPS streetlights. Nice potential. However this is my first real grow attempt. My log is below, and I'd welcome any and all feedback, but I have a more urgent question: We're about to have our first cold front here (I'm in the south). It's supposed to be in the 40's tonight. Eventually we'll have a freeze, so I went to home depot and bought I nice Rating: 5