I've set up an insulated box with heat source and thermostat inside our walk in cooler. Maintains 48 F nicely with 40 degree cooler temp.... On Dec 25, 2011, at 1:15 PM, Kathleen Sayce wrote: > Does anyone on this list have an email address for Darm Crook? I was reading about his 50 F growing chamber using a refrigerator, and would like to talk to him about this. > Richard T. Haard Bellingham, Wa.,