Quote Originally Posted by GeoB
How long do the DE bulbs last on a electronic ballast vs hqi ballast? Are the reflectors better for the DE bulbs?
I can't answer the part about how long the bulbs last on electronic vs HQI, but regarding the reflectors, I think it's pretty tough to beat the performance of the lumenarc reflectors and they're for SE bulbs. They do now make a reflector for DE bulbs and I imagine it gets more out of the bulbs than other fixtures, and it includes the UV shield.

http://www.reefexotics.com/lumenarc.htm