Ive got a b smithi that can climb the side of the plastic tanks.I thought my rose hair could back in the day too,now I wonder if they could climb glass,hum.Funny you ask about the heat because here its good to go in the house so I never had to worry about it,but this is my first winter with them in this place and it gets much colder in here,so Ive just been running the heat alot more wich I need to cut back on.I planned on asking the guys on that other forum.At my old house the Ts were on the top shelf in a closed wich on the botom was the bearded cage and the heat lamps heat would rise up to theirs.So,right now Ive just been keeping the house warm for all my pets,of course the snakes and BTS got heated caging.I am going to go start a thread in the Tarantula site I linked and see what they recomend.For glass a heat pad or low wat light Im sure is good.More plastic tubs you could do heat rope if it was on a rack.On the OBT,the first thing they do after trying to bite is run UP.So always be ready for it to act like that Trinidad Chevron in the one link.