In 1995, T5 fluorescent lamps entered the market in the United States.
T5 lamps are fluorescent lamps that are 5/8" of an inch in diameter.
T5 lamps are available for standard output and high output. The wattages for standard T5 lamps are 14, 21, 28, and 35 watts. The high-output T5 (T5 HO) lamps are available in 24, 39, 54, and 80 watts
Lamp Type Nominal Length
CCT Light Output
* (lm)
Lamp Efficacy** (in) (K) (lm/W) Initial Mean T5 14W 22 3,000-6,500 1,350 1,269-1,275 96 T5 21W 34 3,000-6,500 2,100 1,974-2,000 100 T5 28W 46 3,000-6,500 2,900 2,726-2,750 104 T5 35W 58 3,000-6,500 3,650 3,431-3,450 104 T5 HO 24W 22 3,000-6,500 2,000 1,880-1,895 83 T5 HO 39W 34 3,000-6,500 3,500 3,290-3,320 90 T5 HO 54W 46 3,000-6,500 5,000 4,700-4,740 93 T5 HO 80W 58 3,000-6,500 7,000 6,580-6,650 88
Now some info on NON LINEAR T5 lighting, I'll start with what I use, Feliz.
Feliz lights have a 10,000 hour life cycle with a 6 month warranty. Their proven success in high humidity environments and their ability to provide both red and blue spectrums make them the leading bulb on the market!
200 watt Feliz 6500k:
8620 Lumens
Ideal for use with Sun System® and Bright Wing® fixtures
Proven success in high humidity
Designed for horticulture
Full Spectrum
Fits standard mogul base socket
Cool spectrum for vegetative growing
6 months warranty
250 watt Feliz: (what I use)
11,600 Lumens
Ideal for use with Sun System® and Bright Wing® fixtures
Proven success in high humidity
Designed for horticulture
Full Spectrum
Fits standard mogul base socket
Cool spectrum for vegetative growing
6 months warranty
250 watt feliz 2700k:
12,452 Lumens
Ideal for use with Sun System® and Bright Wing® fixtures
Proven success in high humidity
Designed for horticulture
Full Spectrum
Fits standard mogul base socket
Warm spectrum for flower production
6 months warranty
So, you could easily see the value as far as lumen output goes given the fact you can place them literally an inch above the plant if you like. I use them for veg right now but will be adding (3) of the 250 watt 2700k lights to my flowering chamber next month. That will give me a total just under 70,000 lumen for a 3ftW X 5ftL X 4ftT area. Should help increase the flower size a little bit. The flowering chamber currently has (2) 150 HPS lights in it to help me reach that 70K lumen mark. Temp in there with the two HPS lights is on average 81*f when I added the (3) other fluro's for heat testing the temperature on average over the course of one 12/12 cycle was 82.6*f. Adding the three fluro's only gave me a 1.6*f temp raise, sooo that pretty much made up my mind on whether or not to buy them.
Hope any of this helps the OP
.... This was my idea for CFLs. if I went With T5 for the top lights wouldnt I lose Lumens, oppossed to the amount of CFLs I would be using.
Those Feliz CFLs must have some massive light penetration ability, for results like that. I've never even seen results like that from a 1,000 watt MH, let alone a 250 watt CFL. Wow, now I'm curious.lol I'm going to check into them when i get a little time later on, and see what makes them so effective. I'm assuming that the spectrum has alot to do with it, rather than brute force? I should probably look at the link, eh, and read for myself? 