XM bulb wont light... why???

Blitz99

New member
brand new xm 20k 175 watt bulb will not light after 2 days...

day one on my coralife ballast it worked fine... day 2, it wouldnt work on that ballast, i moved it to my other one and lit fine...

day 3 cant get it to light on either one..

why????
 
Is it a double ended bulb? Make sure it is seated correctly if so. I changed bulbs last night and thought that I had a bad bulb as the new one would not fire. I checked and it was not seated correctly at each end. After I corrected it it fired right away.
 
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