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**alazandv** · May 4th, 2009, 11:19 AM

I change my T-5 every 18-24 months. Usually they fail after 24 months anyway and have to be replaced. Remember not to change all the bulbs at once but stretch it over a period of few weeks. I use sharpie to mark the bulbs that were already replaced so that I don't replace the bulbs I just changed couple of weeks earlier and leave the old ones in there.

May 4th, 2009, 11:19 AM	#3
alazandv Super Moderator Join Date: Dec 2008 Location: Brooklyn Posts: 37 Rep Power: 0	I change my T-5 every 18-24 months. Usually they fail after 24 months anyway and have to be replaced. Remember not to change all the bulbs at once but stretch it over a period of few weeks. I use sharpie to mark the bulbs that were already replaced so that I don't replace the bulbs I just changed couple of weeks earlier and leave the old ones in there. __________________ There comes a time in this hobby when it's just cheaper to silicone around the windows.