I picked up a small BTA yesterday (about 1' dia). Overnight he has crawled way down into a rock. Hoping he comes out within the next few days. Anyway he is the best shot I could get right now. The one Kessil I have right now is on the lowest intensity, 100% blue right now on the opposite side of the tank also. I have my MP10 on the left wall in front of rock about a 1/3" of the way down the wall to create flow in front of the tank. I don't know if this is too much for him it's on 25% on reef setting. It may be he is just so small that any flow is a lot to him.