i ordered the bulb from 1000bulbs.com its a sylvania.. ive got a new sunmaster HPS bulb and a new MH conversion on the way from some other place(cant remember). hope they do me well. 1000bulbs said they will exchange my bulb for a new one. no refund, but oh well thats fine. spare bulbs are a definate + to have now that ive found out the hard way.