I have had these sitting in a closet at the club for 4 years and forgot all about them. These are 400w High Pressure Mercury UV bulbs made originally for longthrow UV Canons, same exact bulbs they use in the paintball and laser tag arenas, looks like a MH bulb. It is not just a "purple painted bulb" like the screw in ones. My 2 canons died several years ago and was replaced with UV LED panels so these just got stored. One bulb will easily saturate a 40ft x 40ft dance floor and if you are wearing white it is powerful enough to make yourself squint from your own clothes.
I snagged the extra ones in 2007 when I heard they will going to stop making the HPM bulbs, but they can still be had on eBay as NOS for around $50. Don't know if they actually stopped making them or not, but read on numerous sites they had.
I will not be using it but did find them interesting, and would be even more interesting to see a larger grow add one as a test.
I put it in a cool tube for a test, didn't know what it would do when hooked to my 400w digital ballast
400 hps on the left and 600 hps on the right
I snagged the extra ones in 2007 when I heard they will going to stop making the HPM bulbs, but they can still be had on eBay as NOS for around $50. Don't know if they actually stopped making them or not, but read on numerous sites they had.
I will not be using it but did find them interesting, and would be even more interesting to see a larger grow add one as a test.
I put it in a cool tube for a test, didn't know what it would do when hooked to my 400w digital ballast
400 hps on the left and 600 hps on the right