600W HPS - ED Style: Suggestions?

Hey guys,

I am just about ready to pop my babies over into flower, and I want to get my HPS rolling. I have a ballast for a 600w, but no bulb. It says "HPS ED Style Only"... and I am having some difficulties finding 600W ED style HPS bulbs. The only one I found was on eBay, and I feel weird about that.

Anybody know of any good ones? Ideally reasonably priced, but I'll pay for quality.

Thanks!

just go to any hydro store an get one

Yeah did it today, for some reason I started thinking it was going to be a special bulb or something, cuz I wasn't seeing "ED" on anything. But I guess that's pretty much just standard.

Is it a digital ballast?? Digital ballast need/require a special kind of bulb to go with digital ballasts... They will burn out a regular bulb if used.