frenchy, first of all let me apologize for laughing at your setup, and floridayank22 is correct in that some people have made it work by raising bps in large enclosures. Afterall in the wild, they aren't confined to a little tiny area. It has eaten for you in this setup correct? Does it have several small, tight hides it can feel comfortable in? Have you tried prescenting the room with its prey prior to feeding? I bet if you keep the live mouse/rat in a small critter keeper inside the tank an hour before feeding, you'll have your ball peeking out of its hide ready to eat.