Okay my understanding is that you need higher wattage to make more light to compensate for depth, IE light just doesn't penetrate very deep into water. Blue light penetrates deepest so I'd assume 150 DE's would be excellent, especially seeing as you only have 14 inches of tank depth. I don't know what exactly you could keep with them but I can't imagine you'd have trouble with anything. You may want to consider 14,000k just to lower the blue appearance a bit.
Doug
|