Uv Light

Please xcuse the low threads posted, I had to open a new acc

Ok so I have experimented with everything else nw. My next go is uv light. Is blck light the correct uv spectrum? or do I want the reptile t5-t8 bulbs? and what kind of times do I want to introduce it to the plants?? any info apperciatedkiss-ass

I know that black light is not the right spectrum.Reptile lights are probably the way to go, but I've also heard that metal halide emits the right wavelengths of uvb as well.This video is long, but it explains about the effects of uvb on cannabis.http://www.youtube.com/watch?v=IPcpt3Be28o

rarrar said:

Please xcuse the low threads posted, I had to open a new acc

Ok so I have experimented with everything else nw. My next go is uv light. Is blck light the correct uv spectrum? or do I want the reptile t5-t8 bulbs? and what kind of times do I want to introduce it to the plants?? any info apperciatedkiss-ass

Click to expand...

'black light' only produces UVA. UVB is what you need. UVB also reduces odors. reptile light is the best. there are several manufacturers making several different UVB quality lamps, 2%, 5%, and 10%. they come in compact (like coils or loops) and full size (tubular). these are only effective during the flower stage, to increase trichrome production of THC.

be careful with those light, they'll give you a sunburn, harm your eyes, and, possibly, cause melanoma, skin cancer.

AND NEVER USE A UVC OR GERMICIDAL LIGHT.IT WILL KILL YOUR PLANTS.That is all.

and have it on during the middle 5-6 hours of ur light cycle. you may want to start out with less and gradually increase so u dont stress the ladies

http://en.wikipedia.org/wiki/Metal_halide_lamp



[FONT=Arial, Verdana, sans-serif]. REPRESENTATIVE LIGHT SOURCES AND THEIR PRINCIPAL TYPES OF RADIATION
Note: Wavelengths responsible for conversion of 7-dehydrocholesterol to cholecalciferol: 280-315nm[/FONT]

well, most HID's lights produce UVA/B, but are coated to prevent their escape from the bulb...

onenumcat said:

well, most HID's lights produce UVA/B, but are coated to prevent their escape from the bulb...

Click to expand...

These are the ones that are used for growing in mind. But if u buy ones for security lights or whatever they usually have a perspex or glass sheet infront which filters out the harmfull rays. Take that offf and u should be gettign bigger abd nicer buds. I believe thats what the glass is for to reduce UV rays.