There could be a chance that it would work, but that is a 400 watt MH light and used for an industrial setting. IMO if you dont mind the looks, you might be able to get that working over your tank. Also, that big block above the reflector is the ballast. It weights ALOT. You would definantly need to find a good strong place to hang that up. Most aquarium lights have remote ballasts that sit under the stand or on the floor. Making the fixture itself lighter and easier to hang.
Also, he states he will sell them in batches of 10. So that would be 300 bucks to set up one of these to see if it works.