a light is no good unless you have a reflector. Effectivly you loose close to 1/2 of the intensity with out a reflector.
Reflectors start at $25 at that site so effectivly the entire MH
solution is $100.
What is your ultimate purpose?
Below is a direct quote from their site. If your going for a SW
setup a higher kelvin bulb will be more desirable.
The Base kit comes with the GE 4000 Kelvin bulb. These bulbs are great for fresh water planted tanks. While not the best bulb for marine reef tanks, they do provide good value for anyone looking to get into metal halide at a low price, as one can always upgrade to a higher Kelvin temperature bulb of the same wattage later on.