and kudos to reefgeek and UPS - the bulb arrived a day early
looking at the actual arc chamber, you can tell it's VERY bright, but in a room lit with even cloudy sunlight, the light it throws still only casts pale shadows
I guess that big 'ol Sun of ours is hard to beat
It's givin some lovin to my basil plant right now, with the socket bracket screwed to a 2x4 ... I'll build it some sort of reflector / enclosure this weekend, since no one 'round here has a suitable metal wastepaper basket I can use.
with the ballast inside that plastic toolbox, I though there might be a heat problem, but it appears the fan has taken care of that - and it appears to be total silent, no noticeable hum, even the fan is very quiet.
I'll be doing up a webpage on this project soon, and will share some more pics with y'all.