I have read all of the posts in the lighting area and still haven't been able to pin it all down. I believe 80Watt or so would do me fine... the problem is my tank is a mere 12" wide... I have not yet been able to come up with a solution. I am very handy and have built the tank my self. The lighting I set up is much too small for my tank to properly host a variety of life (20 watt total of mini compact 50/50). Ant ideas out there?