I've been running the MarsAqua ("Chinese Black Box") 300 watt unit over a 65 gallon tank (same footprint as a 40 breeder) for a year, and have been pretty satisfied with it. (I did lose some corals to lighting issues - but that was because I turned it up too high, and bleached 'em...) It's a 30" unit, and doesn't _really_ use all 300 watts. They're available through Ebay, and generally well within your budget.
~Bruce
~Bruce


