What’s up DGC? I’m on my 3rd grow. This run is my first time growing in an attic. Winter has hit and I scooped up a low wattage heater ( 350 watts low setting / 700 watts high). I didn’t want it running continuously. Still being new to this, I visited my local grow store. They suggested I get the Blueprint Day/Night Temp Controller, BCT-1. I have it set on heat. (Has a cooling setting too) You can set your day and night temps via the two dials. Easy setup and peace of mind when it comes to battling the winter temps. This is definitely a piece of equipment that I feel is essential to my grow / future grows.