I have two T5 fixtures I use to veg, 4' long 4 bulbs and most have burned out, only have 3 bulbs left. I was thinking of getting some LED tubes so I won't have to replace the bulbs as often, use less power, lower heat, all sounds good. I don't think I've seen anyone else using them. Looking online, I noticed there are a bunch to choose from or very little depending where you look. Some have a ballast already attached, some look like they have the white powder coating the tubes, others you can see the indevidual led's, and they were ranging in wattage by quite a bit, then you have all the different colors. I just wanted to see if anyone has any experience or helpful advice before I place an order.