I have a T8 strip light on my 10g that I got from petco about a year ago. Last night when I flipped the switch off, it was dark for about 15 seconds, then all of a sudden it flickered. I quickly unplugged it and figured there was a short in the wiring or something. I just moved and I bet it got bumped. But it was kinda creepy standing there in the complete darkness with a light acting all spooky and whatnot..... So is this something I should worry about? Is it time to toss the fixture and get a new one?