Pardon me for showing my lack of experience with uros, but in my herp room, my corkbarks are situated in a 30 gal tall tank right next to my fimbriatus 40gal tall. The ambient air temp around their cages goes down to 66F at night and climbs to about 83F in the day. I'm also keeping other herps that require higher temps and they are situated at the other end of the room. BTW, since you have a trio in a 30 gal tall, could I add another female to the pair of corkbarks or will their be a confrontation between the females? Also, will the male only breed one female or switch off? Can't add another female for another month, but let me know if it's OK.