UVB Lighting How Much And When ?

[Leeroyrips]

Hi,

      I am thinking of putting in some Uvb lighting in my garden i was wondering if anyone has had any experiance with this ? And or the scientific facts on why UVB light has such a massive part in Trichome production,size, potency,aroma etc. I will use the 23 Watt Exo Terra 200 UVB rating bulb as it seems to have the highest output of the narrow band spectrum im after. So what i would like too know is

1. How long do i run it for in the 12/12 cycle
2. When should i start to use it like first sign of sex, week 2 flower ?
3. Why dont more people use it ?
4. Does it actually make the radical difference the data suggest ( experiance from growers is what im after)
5. And is there a LED on the market with the 280-320 UVB band im after.

I havnt put this in my Glog yet but this is what gear im using

 

Homebox Tent 1.2x1.2x2.0m

600w Sunmster Duel Spectrum

2 x 48w Nelson 3000 warm Cfl's

3 x 48w Nelson 5000 daylight Cfl's

600w Lumitek Digital Ballest

150 mm Canfan exhaust

150mm Canfan filter

2 x Oscilating 30cm Fans

14000 Btu Portable Air-con

And 1 x 23 Watt 200 UVB CFL (not up yet waiting on advice)

Daytemps 26c 55-60 % Humidity

Nightime 19c 50-55 % Humidity

Pic is of current grow half in flower half just week too two into flower.

Edited January 28, 2014 by Leeroyrips

[tangwena]

Hi Leeroy I am no expert, but I just finished a grow using Ceramic Metal Halide its as good as a HPS and MH together, heaps of red, blue and stacks of uv, google them and check out the light spectrum. I cant compare it to HPS because I haven't done a side by side but I am blown away by the size of the colas they are as big as what I would expect to get outdoors on a 2m high plant.

But I grew it in a 1.2 x 1.2 x 1.7 box.

I will be using them exclusively from now on as they don't make sativas stretchy, they stay compact but produce heavily. (check out my diary Ace Malawi)

Tangwena

[Leeroyrips]

Cheers tangy

                        Yeah i have heard of them but they were not on my radar, thanks for the bump ill go do some research now on CMH and there narrow band UVB spectrum and output.