So I have the 18" two-bulb Current T5 fixture and did the pre-order on nanotuners for the UVL bulbs. The first set of bulbs that came in were shorter than 18", but I took them anyway. Now it seems one of them doesn't work...I tried the different inputs or whatever but nothing...it does get hot though. I contacted nanotuners, but awaiting word...any ideas? This bulb has been running maybe 2 months. Thanks~