Advertisement After thinking about this overnight I've come to the conclusion that you're right. I guess I forgot how easy it is for a human to adapt to colder temperature. I can see now that at twmps where Im comfortable it would be a little chilly for a Tarantula, so for now one im going to keep my house in the upper 60's to mid 70's in the winter. Thank you for opening my eyes. The only thing I think your wrong about is that I dont think its lazy to keep the temp down, I think its more selfish than lazy.