Yes, it's been a bumpy few days for the Cannon fish tank. After two pump failures in two days and the loss of a green monti to agents unknown, I noticed today that two of my T5 bulbs aren't coming on (ok, I'll stop whining now - Sherri's the one who's had the REALLY crappy week). I'm running a Tek Light with six 48" bulbs. All of the bulbs are less than three months old. The attached graphic shows how the two outer lights are wired together as a unit, while the four inner lights are wired together as a second unit. The two bulbs in the inner unit marked with a red X aren't coming on. I swapped a working bulb with a non-working bulb and verified that the problem is with the fixture, not the bulb.
Can anyone tell me what might be causing this and how to fix it? I'm not a total electrical noob, but I've never cracked one of these light rigs open before, either.