I just got my first colony, a desert harvester ant colony from Southern California. I am trying to keep them in the 90-92 F range, and I'm currently having trouble keeping them that warm. It has been unseasonably cold as of late, and I have my colony in a small test tube setup in a cardboard box. In the box I have a reptitherm RH-7 mini 4W heater, and I can't get the box to get warmer than about 84-86 F. Is this small difference important to the rate the colony will grow? Can I do something to the box to insulate it to stay warmer? Any help would be appreciated. I tried lining the inside with aluminum foil, with the shiny side facing inwards, and that has only made a 1-2 degree difference. Should I try adding some foam insulating boards, or do I just need a larger heater?
Thanks.