I bought a sunpaq lighting system for my 10 gal tank. It is only 28 watts though. My first question is if 28 watts is enough for live rock, some polyps, maybe a coral or two and fish. that is 2.8 watts per gallon in a fairly shallow tank. could I just put in a 40w bulb or will that not work? They make a 40 system, maybe I should just upgrade to that. It looks very bright now though.