Well winter is rearing its head early this year
so I had to make some adjustments earlier than I anticipated.
Here are pictures and specs of my setup.
9x11 shadehouse converted to a makeshift greenhouse.
Sides and roof are 6 mil Visqueen and the eaves are stuffed with foam.
1 set of T5 lights and 2 sets of T12 lights plugged to a 3 prong extra heavy duty (12 guage) extension cord which is run to my house to an unused dedicated circuit.
2 Warm Steam Vaporizers which alternate with the heater to another heavy duty extension cord run to the garage circuit.
1 Utility Heater with 2 heat settings and a thermostat from Lowes ($20) which works great so far.
We got down to 39 last night and the heater kept the GH a balmy 61.
We will probably have to put up another layer of Visqueen on the inside walls, but we're going to wait until temps are regularly in the 30s at night.
My chids are so spoiled.