Had to move my clams to my 15 gal to save them from my flame. I transfered 4 24" t5ho bulbs. The lights cover the entire top. The squamosa took a little while to get adjusted to the light, at least thats what I think it was. The clams are all doing very well. I also had to move over two montis one is three frags grown together, my first fraging. They were attached to the rock and I had no choice. I also found two frags behind the huge rock I moved out with the clams on it. They are recovering vell well. PICS my camera is not very good. The colors are much better.