From other learning I've had on this forum, you could also cover some of the holes in your bin until the colony grows some. Also works to raise your humidity. I ended up going with a Cozy foot warmer...working great for me so far. When I had it on the high setting it went to where it was set, and the thermostat turned off, but the Cozy foot warmer was still hot and raised the temps 1-2 degrees, then slowly cooled back down. Overall it was about a 15 minutes on, about 45 minutes off (off the top of my head). On the low setting it was about 27 minutes on, 47 minutes off (looking at my stopwatch from when I measured it a few hours ago.) The Cozy foot warmer was ~$24 on Amazon. If it ends up being too much, you always have a nice foot warmer for those cold winter nights. :0) I'm wishing I had an extra right now, my feet are freezing!