I installed a bunch of these lights in our greenhouse then two weeks later decided that we would be moving. As we now have too many of these lights for what little space we have I have decided that it is best to auction them off. Take advantage of this chance to get an amazing high pressure sodium bulb for a fraction of the price. The are like new and have barely been used (maybe 600 hours on them out of their estimated 20,000hr lifespan). We paid over $70 each for these, with a quantity discount! They are the top of the line HPS bulb for horticulture. They are super efficient and have a better spectrum for growing plants than the other HPS bulbs on the market with extra blue. They can be used in any position and can be used with a regular 400 watt ballast. They are great for aquariums too as aquatic plants and coral benifit from the spectum and it looks more natural then many other bulbs. Some quick stats are:
20,000 hours of use
2100 degrees Kelvin
53,000 lumens
Dimensions: 9.75" long x 2.25" diameter
For more info on this great bulb please see : www.lighting.philips.com/us_en/browseliterature/.../p-2707b.pdf
This auction is for one bulb.