What kind of lighting are you guys using?

[Son Of Skyline]

I'm curious to see if my setup is inadequate. Mine's a 27gal (18" high) with a single 175w MH using a cheapo ballast I got from a hydroponics store...which seems to work quite well. I'm wondering if I should change the bulb to something else. What kind of setup are you guys using?

Mine...

27gal 30L x 12W x 18H
175w MH
No name 175w MH ballast
Coralife 10000k bulb
No supplemental actinics