First off I was wondering if I can have a air pump/stone in a reef aquarium (just for decoration). Second is to do with my light my tank is 30" long 18" wide and 25" high and is 56 gallon. This light was recommended to me Odyssea Metal Halide System its the 30" 346W Metal Halide System Advance Plus. It looks like a good light but there is a black thin plastic bar that divides the middle of my aquarium. Does anyone know if that makes it not compatible with that light?