I've noticed he's been clamping more and more, but i had to wait until this morning for the tank to heat up before putting him in. The heater is just a small waterproof heating pad designed to increase the temp to a few degrees over ambient. Right now its sitting about 24-25degrees celsius. I'm not sure if his lack of energy is from being moved to a smaller enclosure. He was in a 20g planted tank, and now hes just in a 2g bowl with nothing >.< I'm going to do the water change tomorrow and feed him a bit of pea, maybe see if he's up for some flaring again.