I've recently been experiencing problems with my fluorescent light (single tube) for my tank. For the past 3 days, when the timer that the light is connected to is supposed to turn the light on, the light stays dark. It isn't until I turn the fixture upside down that it turns on.
Has anyone experienced similar issues? I don't think it's the ballast, as the light turns on quickly when it works, no flicker, no buzzing. The tube is new, as well (had an old 5200K tube, replaced with an 18000K tube last week). The timer is a digital timer plugged into the wall, and turns on everything else the way it should. I'm wondering if the fixture is shot, or if it could be something else.