anyone use em currently? im thinking about it but would like to know if they are any good. and also what kinda temp does it (they) put out
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anyone use em currently? im thinking about it but would like to know if they are any good. and also what kinda temp does it (they) put out
somebody...? anybody...?
I'm experimenting with a uvb bulb in flower and was wondering if anyone else out there has. I got the idea from this video
here is the link my embedded videos never work if someone else can embedded it it would be appreciated.
YouTube - THC, UVB and Me
It seems to make sense but I wanted to see if anyone else out there has done this and if they noticed any difference.
Sorry tried again and it still won't work
ooh...shnazzy
I have notice an almost immediate and drastic change for the better over the last 10 days, the bud sites had almost no visible crystals before and now every site every plant is completely covered. The leafs feel like velvet and the stink has gone through the roof so I will keep this up until harvest and thats when I will know for sure.
Yup, you guys need to read this: http://www.greenmanspage.com/guides/thc.html
I'm with ya man. lookin for a good bulb. One article I read recommended a "Zoo" brand or type(reptile bulb). from the pic, it looked like several diff. Floro tube sizes. They mentioned something on "most UVB/psf" with that bulb. I'm about to go shopping shortly at a few pet stores, I'll repost with what I get.
eep: more crystals...must...have...crystals....
im gonna get a bulb now!
Its not really about "more crystals", Its really about "more THC".
This was off my bulb. 24" 20W Floro. 30%UVa 5%UVb. I didn't go with the 10% cause I've been reading about the potential harm to you and your plants. I'll start with this 5%, and if it goes well I might move up.
Couple things to think about:
1- UVB is harmful; don't enter the room with that light on, and if you do, be certain to use eye protection.
2- You are making more resins, so provide more available carbon for the plant to use. This is the ideal moment to start giving molasses at a couple tbsp per gallon as a safe carbon source.
Yeah take precautions but that is excellent that it works.
Any particulars on bulbs your using?
I tried to find the bulb online it look likes a cfl and it says gives 10% uvb and i have it slowly moving around the plants on a light mover I rigged up. The light is designed for reptiles and I got it at petsmart. It is only on about 4 hours a day.
Thnx Stinky I did set it up so that I turn it on and off after exiting the room.
Stinky I have been giving them only 1 tbs per gal of molasses I should up it then?
Well you know me stinky, molasses is already part of my regimen. As I have read though, it would seem that the Glandular trichomes concentrate the UVb to synthesize more CBD into THC.
I'm using a repti-glo 5.0. I chose that because the 10.0 seemed too intense. On the box it read "for use when a screen is on top of your terrarium blocking some of the UVb from your reptiles". Plus then there is the abundant warnings about potential danger of UVb.
I have my light "door triggered". When my door opens, The UVb light goes out.
ooh. triggers sound technical....awsome!
any noticable difference withy the uvb?
all the bulbs in stores are like 40-50 and only like 10 less on ebay.....
we should merge this w/ the other uvb thread
merge it if you must....but as far as i know about these bulbs they supposedly produce more resin glands in the plant(s) in which produces more crystal on your bud and leaves....i went out and got 4 of em little buggers and the effects on my blueberryxbubblegum are amazing!crystals growing everywhere and every new leaf is even more packed than the older bigger leaves.....thanks for the help guys....
drift
I can't say anything about the results until I smoke them. I do notice my girls packing on more crystals and smelling pretty pungent, but its due to note that this is normal for 7 weeks into flower with this strain.
On the plus side, The one I'm harvesting in the next 5-6 weeks is a sativa dom. then about 4-6 weeks after that, I'll harvest my indica dom. This will give me a good idea about which type reacts best to the added UVb.
edit: The trigger is very simple, they sell them for home security systems. its a very simple pressure activated switch. a hole must be drilled into the door jam, the switch goes in the hole. When you shut the door the switch is depressed. then just wire in and your done. Be sure to use proper electrical safety when attempting this.
I got mine for 15 at petsmart I didn't see it online but in the store they have them and those screw into a regular socket
Geez zcomp. You DO think of everything, you and your door trigger. Very nice. high five.
Well I can't take credit for the idea(found it while I was researching the subject). But I'll take the high five for implementation.
For everyone else remember, when you purchase these bulbs, the manufacturer thinks that you'll be looking at this light through glass. Glass filters almost all UVb. They aren't guaranteeing your safety staring straight at the bulb. You wouldn't stare at the sun would you? no you'd wear glasses. Also your eye's aren't the only worry, your skin gets very damaged from UVb. were talking skin cancer here. If you can't rig up the switch, please place them facing away from where you enter and shut them off the instant you walk in.
I'm just trying one 5.0 bulb to see. then if it works, I'll see if I can/should add more.
I've merged these threads to get all this neat info in one place.
The more I read into this, I'm finding that, you girls only accept UVb until trichs start going amber. possibly that UVb is what causes ambering of trichs. I'm reading that HID bulbs put off some UVb as well. MH more so than HPS.
This is all conjecture so see what ya'll can find. Since glass filters UVb, I've taken my glass off my HPS. Anybody think this could be a mistake?
I don't have glass on my 400w HPS but I have great circulation and ventilation and my 2nd round under that is going great with no problems, I have a fan blowing directly across the bulb as when as circulation and ventilation.
No problems here though.
I've got this sativa dominant strain finishing up. It's in it's freaking 9th week of flower and not done. Sativas are so freaking slow. So I put in this black light bulb for the hell of it. They began to really stank and the trichs are huge. I don't know if that was it as it's about that time anyway. But cool.
Yeah, I got a sativa dom. that takes almost 13 weeks. I blame the genetics and superthrive, which I just learned will extend flowering.
Black light bulb huh? does that put out comparable UVb? I hadn't really thought about them since reptile bulbs scream about there UVb. I hope black lights don't put out UVb, I've spent too many raves staring at the black lights. LOL
lol i dont think black lights have much, since theyre always debunked for thier use in growing.
TY for the merge, i noticed on the weekend we had two uvb threads
"These black lights for reptiles are NOT the black light tubes used for lighting fluorescent minerals, posters, and psychedelic paraphernalia (often called BLB lights). Fish/aquarium and plant 'grow' lights, either incandescent or fluorescent, do NOT produce UVB. You need a black light which emits light in the 290-320 nanometer range."
there we go, and off a reptile site too.
wonder if you can buy leds in that sprectrum?
Yes absolutly. Led's can be configured for any(subjective) exact nm. Thats what makes them so interesting to growers.
I have some nightlights on my aquarium that are led, I'll check there nm and get back to ya.
ive searced it, and there are reference to experiments with uvb leds here and there, but no apparent way to buy such a light
UVb is between 290nm-320nm. This link tells you how to get'em
LEDs - Gallium Indium Nitride UV, violet, purple, blue, aqua, turquoise, green, white. Also Gallium Arsenide and others. New LED MUSEUM! GaN, InGaN, SiC, GaAs, GaP, GaAlP, ZnSe, flashlight, flashlights.:
Doh!
yeah, get ready to shell out $300-$400 per led. LOL.
thats not at all pricy when you can buy a lamp that emits more light for 10% the cost.... :p
guess its partly due to lack of demand
found some medical bulbs, not leds tho:
Phototherapy Bulb Types & Pricing - UVB Narrowband, UVB Broadband, PUVA - Solarc Systems Ultraviolet Phototherapy Equipment
they have a 36w for 105$
If this whole UVB thing were true, wouldn't people growing outdoors notice that their plants have more THC than when they grow indoors? There is a lot of UVB outdoors.
Has anyone seen or tried a side-by-side on this? Like getting 8 cuttings as identical as possible, growing 4 with and 4 without UVB, then measuring THC? Or is it just people say that they noticed an improvement in THC amounts and/or trichome quantity after starting the use of UVB. Well hello?! There would be an improvement whether they put some UVB in their grow or not. Besides Zcomp says it's not about trichomes, but the ability to convert CB into THC. How can anyone say they have noticed an improvement in THC amounts unless they have the equipment and knowledge to measure CB and THC percentages? I doubt you are going to be able to smoke the two and know which is which from smoking alone. Am I wrong? OK teach me wise ones.
And Zcomp, sorry. It's just a little too stoney in here for me to read all of that article. Is this the conclusion?: The heads or balls on the trichomes magnify UVB, and this makes more THC, which by the way is one of many cannabinoidals (just under 70 at last count).
I was growing side by side and was noticing significant differences and was forced to harvest the non uvb early b/c of problems, still good bud but not far enough along. And now all results are null & void because obvious differences in conditions were most likely the biggest factor, however what is under uvb and should finish up by christmas is the most ridiculously crystallized shit I have ever seen, in seriously undersized pots. As long as you are safe with uvb it is a cheap experiment that I have experienced no ill effects from and am having my best results in some of my worst conditions, still good, just not ideal. All for only a $15 bulb, 2 $.89 extension cords and a homemade aluminum can reflector so for that price if your wondering be safe and give it a try.
Have you grown that particular strain before without uv lights, and notice that with uv you get more resin? Or is that strain usually ridiculously crystallized?Quote:
Originally Posted by sd6515