420guy said:Hal-the t-5's work AMAZING...next to zero heat so ya can slam 'em right on top of the canopy...lumen output real comparable to the h.i.d. and less power consumption than standard h.i.d. lighting...only real downside to 'em is that they really don't penetrate much past 36" so in my case i can only use 'em to veg. but would be PERFECT for closet growers and such