Does ir or uv light bleach plants if you get them to close ?

[tekdc911]

does ir 3 w diodes or uv 3 w bleach plants when you get them to close ?

 

[mc130p]

I'm pretty sure it's the blues...

 

[tekdc911]

i have a scrog setup and when i get the panel to close it bleaches under what looks to be a uv or ir directly under

 

[tekdc911]

just wondering how to tell the diference so on the next panel i wont get that one

 

[Scotch089]

18" seems to be the place to be, in my experience- it was the blue (no uv or ir diodes in the panels)

Either

1- too many B's to R's
2- too narrow of a lens on too strong of a diode
3- not spread evenly, over saturated
4- all of the above

Standard test format

 

[tekdc911]

this one is supposed to have a uv and ir they burn like a red/orange ish flicker color 2 almost not visable in the middle of the panel its the 7 band china junk

 

[aknight3]

As long as you have a good enough exhaust system you can get away with 11-12 inches from the tops, any closer and light bleaching happens, i did it once to my plants, but the light was seriously like 6-8 inches close to the plants, i wanted to do see, had a great exhaust. but 18 is pretty standard for lower flow systems, i run about 15 inches from the tops now, 15-18 about so yea. u could go close but at that point your losing light footprint so unless you have multiple lights it wont work to youtr advantage, good luck,




im unsure if it was uv or ir or what but the tops of my plants turnedl iterally white and didnt grow lol it def fucked them up and it was noticable, literally the plant turned...white.

 

[Scotch089]

Iiiii don't know what UV and IR diodes look like illuminated personally... Well, I do, but don't. My PG's had UV+IR... Someone on here had stated that they do not look like they are lot up when they are on because the wavelengths are not in the visible spectrum. Also, someone else had researched and found the REAL price of UV diodes, and it was well beyond what we are paying for entire panels.

What kind of panel do you own OP?

Knight- are you talking with LEDs?? kindve panel?

 

[Bumping Spheda]

What kind of UV LED's are you talking about Scotch? Those sounds primo as fuck, or something. I've seen tons of UV flashlights on eBay to light up scorpions, $100 bills, expose photopolymers for etching copper/photogravure, etc. and they are NOT that expensive.


Edit: Btw, sorry for derail. Yeah, if you're bleaching you're too close, irrespective of what LED is the culprit. You need to be at a certain panel height for spectral mixing to take place, imo.

 

[aknight3]

no iwas actually using a hps, i think im really confused and am not talking about thesame thing as OP lol

 

[tekdc911]

was thinking about just soldering a zener in place of the 2 leds im having issues with i was running them about 2-4 inches away

 

[Scotch089]

What kind of UV LED's are you talking about Scotch? Those sounds primo as fuck, or something. I've seen tons of UV flashlights on eBay to light up scorpions, $100 bills, expose photopolymers for etching copper/photogravure, etc. and they are NOT that expensive.


Edit: Btw, sorry for derail. Yeah, if you're bleaching you're too close, irrespective of what LED is the culprit. You need to be at a certain panel height for spectral mixing to take place, imo.

Im not sure pheda, some one else had looked them up and stated so. Guess that's forum jargin at it's finest. Is there a realistic diode we could look into for UV supp? Ive had this internal conflict over and over and finally just settled on cornered T8's and reptile cfls if I were to ever dive in, but that means Id need another timer, which means more power strips... more outlets.....igh... in time. Sorry, off topic.

IS there a "realistic" UV diode out? Maybe for DIY's. .... that would be a game changer ;D

Hey Op, get a scorpion put em under your panel!! haha my dad used to have one.. damnit..

 

[stardustsailor]

Most commonly as "UV Leds " in the led industry/market are referred the

- Violet 390-410 nm leds ( or chips ) .....

Those are used for curing paints ,photo-transfer etchings,uv flashlights ,i.e.

Prices are in the $5-$40 range (per unit ) ,depending of led brand /quality .....

When lit they emit a deep ,dim (only to human vision ) violet light .
Pretty dangerous leds for human vision .
Specially if the are of >300mW output power .



Going down the wls ,next UV leds are the UVa 350-370 nm leds .

Used commonly in medical science and industry.
Mainly for working with photo-sensitive material ( i.e. curing epoxies or dental glues ./polymers . ..)

Really dangerous , in case of prolonged exposure at their radiation .

When lit ,it's barely visible a violet/light blue light ...
Price range : $100- $1000 . (per unit )


Next are the "water purification / sterilisation " 250-340 nm UVb leds .
Price range : $500-$10.000 (per unit ) .

When "on" no light is visible ...Nothing at all ...

Extremely dangerous for eyes & skin.

Lots of colouring in materials will fade under their radiation .
Many plastics (polymers) & fabric (clothes ) will detoriate by time ,when exposed .

Always their casing is from some kind of UV resistant metal and their lenses
are made from High purity Quartz crystal -in order not to filter out the emitted UV radiation and withstand it's " corrosive/ detoriating " effects ...
( -Glass absorbs UV / Plastic detoriates- )

...



The first type (395-410) nm is used at several grow lights ,already ...

2-4 leds of ~400mW are enough to cover an area of 1 square meter . ( 3' x 3' )
Best at widest emission angle possible ( >120°)

A bit more more and plants will be stunted or fried .


The other two types are not used .


Sun's max uv ( 250- 400 nm )radiation " density " ,at earth's surface is ~ 5 Watts per square meter .



No jargin from me ,Scotch ...Never ...

 

[tekdc911]

As long as you have a good enough exhaust system you can get away with 11-12 inches from the tops, any closer and light bleaching happens, i did it once to my plants, but the light was seriously like 6-8 inches close to the plants, i wanted to do see, had a great exhaust. but 18 is pretty standard for lower flow systems, i run about 15 inches from the tops now, 15-18 about so yea. u could go close but at that point your losing light footprint so unless you have multiple lights it wont work to youtr advantage, good luck,




im unsure if it was uv or ir or what but the tops of my plants turnedl iterally white and didnt grow lol it def fucked them up and it was noticable, literally the plant turned...white.

i only grow auto's and a 135 ufo fits a auto in a scrog nicely at 3-4 inches lol didnt know it was gonna do all that
only the 7 band did it i can run the bloom at 4 -5 inches no problem

 

[tekdc911]

and my lenses are 120 degrees