Lighting...Something Im Missing?

if your old fixture came with a T8, i would use a T8 to replace it, it wont work unless your ballast is made to work with both
 
im pretty sure its an all-glass hood, guess iv gotta return the bulb... thing works great when i touch it to the toy plasma globe, but put it in the fixture and theres no hope :screwy:
 
Sounds like the bulb is probably good then.

Does your fixture have a removable/replaceable starter (silver can)? That could need replacing.

Generally I've found T12's to work in most any fixture...95 % of the time.

If that's not it, and you can easily return the T12...get a daylight (which is ~6500K) T8 at a local home improvement or lighting shop. You could even take the fixture in with you to make sure the lamp works in it.
 
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