I got a RBTA 3 days ago and he's acclimated well to the tank. After a few hours it plumped right up and seemed pretty happy. I placed it in medium flow and about half way up from the bottom under my MH lights. It stayed there all day and didn't move but overnight it moved to the bottom and all the way in the back of the tank. I thought these guys liked a lot of light and good flow? It's in a shady spot of the tank with very little flow. What gives? The spot it's in right now is also impossible to reach with my hand so I will have an extremely difficult time feeding it. Is there anything I can do or should I just let it be? Below are a couple pics. The first is when it initially went in the tank and the other is after 8 hrs and it plumped up.