Ok so I got my three colubrids in a room upstairs in my house. It's summer here. There's no air conditioner up there. So the temps in the room are gonna usually hover around 29-30 C during the day but won't drop lower than 24-25C at night. Obviously I don't have to worry about giving them any extra heat. And if it did get any cooler at night no problem I'll give them extra heat. My biggest concern is they aren't going to have a daytime temperature gradient in their vivs. Is that a concern? And is 25C maybe sometimes 26C at night enough of a night time temperature drop? And if they were feeling too warm or uncomfortable what kind of signs would they give me?