My tank is 27g hexagon, 24'' deep and has a maximum width of 20'' in the middle. I would eventually like to have coral in my tank and so I have decided to get a metal halide light. I have decided I would like to either get a light that I could hang from the ceiling or mount on one of the sides of the tank. Here are the two I am considering the Aqualight Advanced Series HQI Metal Halide Fixture
and the 150W SunPod HQI Metal Halide Fixture
Just a couple of questions, has anyone had any experience with these two lights, or can anyone recommend a better light that would fit my needs? Also I've read that with my tank depth a 250W MH
is recommended. However if I would just like to get low and medium light corals would 150W be enough?? Also if I do get the 150 and would like to have a coral that requires more light would a possible solution be to just place these corals higher up in the tank??