my apologies. i was posting on different forums to see if i could get an answer quicker. i heard that their cool side should be around 72° and i apologize for being misinformed. she isn't breathing with her mouth open and she hasn't yawned at all. i'm almost positive it was saliva, as it was clear and didn't appear to be mucus. It stopped after I got everything out, but I haven't checked again since to see if it has begun to build up again or not. She was in her tank.