Uva Uvb + White Led Community Help!

[5ecret 5quirrel]

Calling on the community for help,
recently picked up some UVA and UVB fluorescent
Philips TL 60W/10-R SLV/25

QUV UV-B 313nm Lamp (knock off)

I had the lights on for about an hour before reading:
Because all UV-B lamps emit unnatural, short-wavelengths of UV that are below the solar cutoff of 295 nm, anomalous results can occur.
then i got real nervous that the UVB wave lengths under 295 nm would damage the THC on the buds. needless to say the UVB 313nm lights are off, but i kept the UVA florescence "ON" and running.

The Whole goal was to peak at 280-315nm to hit the UVR8 (ultraviolet-B receptor UVR8) but not i'm to scared to go through with it.

Should i go for it, are my trichomes in danger from the UVB 313nm?
Any wisdom from the community would be greatly appreciated.

 

[DrMcSkunkins]

Adding uva and uvb will boost resin production and shorten flower time by a week or two. The fans mature faster and show more colors, and the trichomes go amber faster, but I was just using a CoB LeD with Uva and B, I just added white Led and I'm liking it so far.

 

[BombBP]

I think they'll be fine also.

 

[5ecret 5quirrel]

Adding uva and uvb will boost resin production and shorten flower time by a week or two. The fans mature faster and show more colors, and the trichomes go amber faster, but I was just using a CoB LeD with Uva and B, I just added white Led and I'm liking it so far.

Shortens flwr time by 1 WEEK or 2 Weeks!! thats huge!

What week do you start introducing UV light to the plants?

you got any info of your UV cob? would love to look into it.

i was told to turn on the UV sepctrum at last two weeks of flwr

 

[GT21]

Calling on the community for help,
recently picked up some UVA and UVB fluorescent
Philips TL 60W/10-R SLV/25
View attachment 668135

QUV UV-B 313nm Lamp (knock off)
View attachment 668134

I had the lights on for about an hour before reading:
Because all UV-B lamps emit unnatural, short-wavelengths of UV that are below the solar cutoff of 295 nm, anomalous results can occur.
then i got real nervous that the UVB wave lengths under 295 nm would damage the THC on the buds. needless to say the UVB 313nm lights are off, but i kept the UVA florescence "ON" and running.

The Whole goal was to peak at 280-315nm to hit the UVR8 (ultraviolet-B receptor UVR8) but not i'm to scared to go through with it.

Should i go for it, are my trichomes in danger from the UVB 313nm?
Any wisdom from the community would be greatly appreciated.

Nice grow... definitely use the uvb bulb... uva doesn't have the same effect as uvb as far as trich production. I use the uvb lights all the way through flower and start right after the stretch phase.

 

[5ecret 5quirrel]

Nice grow... definitely use the uvb bulb... uva doesn't have the same effect as uvb as far as trich production. I use the uvb lights all the way through flower and start right after the stretch phase.

thanks GT21,
good to know. are you see flwr time shortening?

they just finished week 6, with two more weeks to go.

 

[5ecret 5quirrel]

Adding uva and uvb will boost resin production and shorten flower time by a week or two. The fans mature faster and show more colors, and the trichomes go amber faster, but I was just using a CoB LeD with Uva and B, I just added white Led and I'm liking it so far.

Yo Doc, on quick question, does a shortened flwr time effect the weight of your crop? i have so many questions :facepalm:

 

[GT21]

thanks GT21,
good to know. are you see flwr time shortening?

they just finished week 6, with two more weeks to go.
View attachment 668216

Ya... trich maturation is shortened by about a week.

 

[5ecret 5quirrel]

4-11 days left till the end of this cycle,
things are yellowing nicely

OG lemon candy

Afghan cow

Kritical K

rockstar cheese

Barney's amnesia lemon

Yellow strip due to the concentration of uv in middle?

 

[DrMcSkunkins]

Yo Doc, on quick question, does a shortened flwr time effect the weight of your crop? i have so many questions :facepalm:

I have only used full spectrum CoB LeD until I just added white led and I have already noticed a size difference.

 

[5ecret 5quirrel]

trees in the middle row are noticeably whiter with trichomes, it's blowing my mind !
at first i thought it was mites:woot::hungover::happy:

 

[GT21]

trees in the middle row are noticeably whiter with trichomes, it's blowing my mind !
at first i thought it was mites:woot::hungover::happy:

This is one thing i recommend over any nutes or gear. Uvb brings out plant protection and you can clearly see a difference in grows.

 

[DrMcSkunkins]

I'm anxious to see if flowering from start to finish with white LED added to the quick finishing CoB will still finish ten days faster or if the white light added will lengthen the flower time but double the size.

 

[5ecret 5quirrel]

Just ordered a magnifing lens for my phone, this thread is becoming pointless without a 40x scope.

 

[GT21]

It all comes out good with uvb... doesnt really matter what nutes you use. I dont do terpinator or molasses or any kinda hog wash.
Grow it..dry it.. smoke it hahaha

 

[5ecret 5quirrel]

It all comes out good with uvb... doesnt really matter what nutes you use. I dont do terpinator or molasses or any kinda hog wash.
Grow it..dry it.. smoke it hahaha

amazing! that looks so golden, what's the amber to milky ratio on the trichs at harvest?

 

[GT21]

amazing! that looks so golden, what's the amber to milky ratio on the trichs at harvest?

I pull some plants at 50/50 then some of my head stash is yanked at the first amber trich. Depends on who its going to really.
I wanna say this is-

Afghan skunk(texas)
Sweet Lucy(rhode island)
Frog dog(cal)/Strawberry cough(uk)

In order of pics.

Uvb changes the chemical make up of the trich and thickens the cuticle.. and helps with oil production.

 

[keiksweat]

totally agree.I've experimented with uvb reptile bulbs,and a uvb small t5 with ballast.came from an aquarium shop.started at last two weeks.then from last three weeks.then right through bloom.ive had many discussions,and lots of arguments about it....but,proof is in the pudding,so to speak...resin content goes through the roof.ive even found golden coloured sap,leaking from buds.....i agree with the time window,after stretch,switch them on...hope you get similar results.ive gotta get a new bulb for my uv t5 ballast.
keiks....

 

[5ecret 5quirrel]

Adding uva and uvb will boost resin production and shorten flower time by a week or two. The fans mature faster and show more colors, and the trichomes go amber faster, but I was just using a CoB LeD with Uva and B, I just added white Led and I'm liking it so far.

Totally! the colors are so spectral, green is such a boring color in comparison. can you share the make and model of the UV Led Cob you use? I've personally been having a hard time finding any information on uv led lights.

how's the uva to uvb ratio? any information would be greatly appreciated.

 

[5ecret 5quirrel]

totally agree.I've experimented with uvb reptile bulbs,and a uvb small t5 with ballast.came from an aquarium shop.started at last two weeks.then from last three weeks.then right through bloom.ive had many discussions,and lots of arguments about it....but,proof is in the pudding,so to speak...resin content goes through the roof.ive even found golden coloured sap,leaking from buds.....i agree with the time window,after stretch,switch them on...hope you get similar results.ive gotta get a new bulb for my uv t5 ballast.
keiks....

visually noticeable, you know those moments of epiphany, yeeeeah, i'm having many atm.

the UVB 313nm light i bought was originally designed for accelerated weathering, (skip to UVB)

(info from) http://www.q-lab.com/products/lamps-optical-filters/lamps-and-optical-filters

i haven't been able to find anyone using this bulb for horticulture, so i'm doing daily checks to see if my trics are still ok :eyepiece:
So far so good:)

*quick update*
leaves are falling off like crazy, just dying off, bud seems like its in protection mode. some trichs (very very few) have blackish purplish dots (will post pic soon)