Thanks for the info! I'm using a ZooMed mini to heat the six quart. The temps without holes and a water bowl are running at the right temp, but I'm concerned that holes will lower it enough to make me upgrade.

I hear a lot about flex-watt tape. What can people tell me about this? I'm planning on building my own rack, using one of the DIY ones I've found on here. Also need a thermostat. But since I only have two (and one on the way), I won't be spending a large amount. Thanks again!