UV Suppliment Lighting

Rocket Soul

Rocket Soul

Well-Known Member
Hard to say without further details, but generally put your uv ligh on a separate dimmable driver and timer: uvb/280nm will fry your plant if you dont ease into it but i dont know of anything (not diy) which has uvb.
 
K

KingPhoenix

Member
nachooo said:
This light has not UVB...And probably very little UVA...Dont believe this alibaba sellers...
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Thanks man, im new to the game, its hard to know what to trust. For my knowledge can you tell on the graph because of the lack of anything below 400nm?

Seemed like an unecessary extra that was used to drive up the price, but just wanted to make sure.
 
nachooo

nachooo

Well-Known Member
KingPhoenix said:
Thanks man, im new to the game, its hard to know what to trust. For my knowledge can you tell on the graph because of the lack of anything below 400nm?

Seemed like an unecessary extra that was used to drive up the price, but just wanted to make sure.
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Those grapshs show a little UVA in the 385 nm aprox (black graphs)..but of course not UVB.... Is hard to find good UVB leds and they are expensive...This little UVA quantity can improve terpenes...but it seems that is very little...
 
Merlin1147

Merlin1147

Well-Known Member
Mikenike said:
I still got a couple of those. Have you used them yet? I ran them at 16” last grow for a few weeks
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I’ve been running the UVA chips the last couple runs. It seems like there is more frostiness and terps. I just got the Arcadia14% in after reading this whole thread through again. I have some Solacure T12 but I’m afraid to use them and I would have to hang them above the strip light so there would be too much shading. Really looking forward to trialing the Arcadia’s.
 
nachooo

nachooo

Well-Known Member
Rocket Soul said:
All other things being equal (price, efficiency etc) Id go for 360, plant response to UV seems to be strongest around 280nm and 365nm.

@nachooo might wanna say something, he runs several types of UV with to great effect.
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Think that if you are running UVA/UVB reptile fluorescent and they are a good brand like arcadia or solacure..you dont need to add more UVA leds...But if you like to do it anyway Best in UVB is 285nm and in UVA range for me are working nice 365,385.. I also add 410nm but is not really UVA ..is violet
 
cobshopgrow

cobshopgrow

Well-Known Member
thanks guys, not so easy to decide there.
Price and efficiency isnt the same.
Looks like there is no know receptor peak in UVA.

Ill have some reptile bulbs, but will see how i use them.
May use them alternating, first UVA then late in flower also or only UVB.
Building also 2 lamps, so one wouldnt have reptiles anyway and the strips are easy to include.

So lets conclude, 365 and 385 is working.
I read also several times that near UV , like the 410nm, is benefical when giving UV light.

I will dig a bit the datasheets and decide for 360-370 or 370-380nm.
 
Rocket Soul

Rocket Soul

Well-Known Member
cobshopgrow said:
thanks guys, not so easy to decide there.
Price and efficiency isnt the same.
Looks like there is no know receptor peak in UVA.

Ill have some reptile bulbs, but will see how i use them.
May use them alternating, first UVA then late in flower also or only UVB.
Building also 2 lamps, so one wouldnt have reptiles anyway and the strips are easy to include.

So lets conclude, 365 and 385 is working.
I read also several times that near UV , like the 410nm, is benefical when giving UV light.

I will dig a bit the datasheets and decide for 360-370 or 370-380nm.
Click to expand...
You can try googling "uv stomata aperture action spectrum" for a cool paper on this: there are peaks at 280, 365 and 420 iirc. Its not the same thing as uvr8 activation but usually nature works in an organized fashion: if 365 opens the stomata it would probably also express other uv related stuff. My 2 cents
 
cobshopgrow

cobshopgrow

Well-Known Member
thats a good read, there are some nm numbers :).
Think i will go with these 360-370.
Cant really decide if i should add some in the 400-450 range.
450nm should be well covered from the 3000k eb 3 strips, just the 420nm range dont get much.
 
nachooo

nachooo

Well-Known Member
cobshopgrow said:
thanks guys, not so easy to decide there.
Price and efficiency isnt the same.
Looks like there is no know receptor peak in UVA.

Ill have some reptile bulbs, but will see how i use them.
May use them alternating, first UVA then late in flower also or only UVB.
Building also 2 lamps, so one wouldnt have reptiles anyway and the strips are easy to include.

So lets conclude, 365 and 385 is working.
I read also several times that near UV , like the 410nm, is benefical when giving UV light.

I will dig a bit the datasheets and decide for 360-370 or 370-380nm.
Click to expand...
Try to not use UVB alone...mix always with UVA...Seems that UVA protects from some nasty effects from UVB..
For UVA peak reception...look at this graph...see what happens around 360-390
phytocrome.png
 
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