He was in a 10 gal, and I moved him back into a 2.5 gal about 2 weeks ago-strange as it may seem, he didn't like the 10 gal. He had quit moving at all. So he is back to his old self in the smaller tank, so I assume that is what he likes, as he is back to being active and responding to me being around and such and making his little bubble nests.
I do a 100% every 4 or 5 days (sometimes less, depends), and his tank is at 80. I was worried at first it was too high, but he is most active at 80. I put in water conditioner, and I feed him the only food he will eat-the pellets. I feed him one at a time and give him 3-4 pellets once a day. There is never excess food in his tank. I have about 3 different types of food for him, but he will only eat the pellets.
He is alone in his tank. I have not treated him at all yet, this just popped up today.