Late flower uvb

[yesum]

I have a uvb bulb and due to space restrictions have not used it during flower. I need at least 5 inches of space between the bulb and the buds and I am using the bulb vertically. I am in the last week or 2 of flower and am going to take half the plants out of the tent and give those left in it an hour of uvb and then switch the plants and do it again.

This is a hassle and can only do it for a few days. I am wondering if it will have any effect. I do not need more trichs as there are more than enough on all plants. I was hoping the thc in the trichs might become activated a bit by the uvb, even though it will be just a few hours during the plants life.

I have a uvb meter and have figured out how much the plants can take and the lower limits of uvb at the farthest distances, so no worries there.

 

[dannyboy602]

yeah uvb does make a difference. if you have no other limiting factors. indicas that originate from the afghan mountains are higher in altitude. the light they receive is not as filtered by ozone and moisture and other shit in the atmosphere. but you're only doing it for a short time so no i don't think it will have much effect. wish it were that easy.

 

[cues]

Why not just use a mh bulb at the end of flower?

 

[yesum]

^^ I do not use hid for safety reasons and mh puts out almost no uvb. I know that for a fact.

 

[polyarcturus]

hmm your scared of a little elec? jk. i would build a bigger enclousure, but for the UVB levels your chasing after they will never be achieved by just eposing them for a week you need to have UV the whole time to get the best affect. plus you need an intense light source for UVB like a mercury vapor bulb(for reptiles) or a t5 or a couple of the 26w cfls. i recommend the merc vapor because it still doesn't hit the levels of UVB that would be ideal but is the strongest available and the most intense

 

[cues]

Umm, mh bulbs DO produce UVA and UVB. That's why they are used for reptiles, although mercury lamps are better. In fact, the bulb casing is usually treated with fused silica specifically to attempt to filter excessive amounts of it to prevent eye and skin damage.
I would suggest using uv at the end of the grow. The point is to make the plant try to protect itself with the thc glands.
My first indoor grow (many years ago) was with a 70w mecury lamp.

 

[polyarcturus]

Umm, mh bulbs DO produce UVA and UVB. That's why they are used for reptiles, although mercury lamps are better. In fact, the bulb casing is usually treated with fused silica specifically to attempt to filter excessive amounts of it to prevent eye and skin damage.
I would suggest using uv at the end of the grow. The point is to make the plant try to protect itself with the thc glands.
My first indoor grow (many years ago) was with a 70w mecury lamp.

do your fucking research that commercial bulb is doped with more chemicals than silicon and it does better than filter some UV light it filters all. reptiles bulbs are made from special quartz glass with a specific amt of iron to limit the UV and bluck all UV under 275nm.

so all your 70w merc vape did is provide visible light. you can try shock treatment at the end of a grow but they would be comparative to say stabbing you main cola with a nail, wont do shit unless you get a plant that wants to react that way.but good luck with that.

 

[polyarcturus]

megaray was the only MH in the market for reptile they stopped manufacturing because the glass maker stopped producing. it use the same special glass as a merc vape.

 

[cues]

Chill Poly. Maybe I am wrong. As you say, I haven't done my research. I only keep Pythons which as you may know, don't require UV. I do, however, spend time in reptile shops which is where my general info was gleaned. Not worth getting so uptight about though.
I have been thinking about using a mh for last week of flower.
Opinions?

 

[PJ Diaz]

I just took my T5 uvb lamp down, because I only had one on one side of my 4x4 tent, and I didn't really notice much difference between the plants right next to it, and the ones on the other side of the tent.

 

[Dwezelitsame]

i started wit a 250w hps(eye hortilux) and i used a uvb 1 hour a day with it

i have since added a 250w cmh (phillips) which like mentioned has uvb rays
but i still throw my uvb in for a hour a dy mid day

i think the eye horti and the cmh phillips are the best bulbs out

i use both lights all the time for flower i use the three of them
i spin my pots a 1/4 turn a day and i rotate position under the lights once a week




the truth of the matter is mh or cmh for veg is best
first 1/3 of flower mh/cmc is best for reduced stretch
second 1/3 hps is the best for rock hard buds
the last 1/3 back to mh or cmh for packin it on in last bulk up

so i figured full spectrum full time the way for me 500w multy spectrum
spinning and rotating for the full cycle

 

[polyarcturus]

"-right now trigger in finger gun against head."

 

[polyarcturus]

@dwelzel ; phillips is awesome and the CMH is super nice spectrum wise but out of all HID it throws the least UVB.

everything else you said i pretty much right on point.
@pj; what brand t5 flouro where you using? if it was a zilla i know why, you need an arcadia, but personally i will only use the MV and MH bulbs.

@cues; im only kidding around i wasnt trying to be an asshole. as usual i have bad communication skillz,all the stuff ive learned about as far as the bulbs go has mostly come from reptile peeps and a couple growers on here, and besides that all the emails to manufacturers and research papers off google.

 

[polyarcturus]

"-right now trigger in finger gun against head."

only joking

 

[Dwezelitsame]

@dwelzel ; phillips is awesome and the CMH is super nice spectrum wise but out of all HID it throws the least UVB.

is why i still use my uvb bulb

im just voicin my opinion which is all we all can do an we all have a opinion if we have a brain
not tryin to convince nobody dont really care whut all do just sayin whut i do
unlike most i realize ther are a hundred ways to do every step of this game none wrong none right
whutever works best for you and your setup not whut the other guy does

 

[Dwezelitsame]

it must be nie to know it all im 62 and every day i realize how little i know

but im open sum are shut down cause they think there cup is full

 

[Dwezelitsame]

i dont agrre wit all you have to say but i respect your right to say it

 

[cues]

@Poly
No worries mate. Thought it was a bit strange. Never seen you have an 'attitude' before. Obviously took it the wong way. Mutual apologies sent and accepted
Reptile shops are useful for other things too. Their prices on water pumps for hydro are usually cheaper than grow shops. They also do carbon for filters (although if it's the correct type is arguable).
My background (career) is in soil, although strangely I also grow in Hydro. Soil is where my main understanding is. I understand soil, water, fertilisers and their interactions, lock-outs, cation exchange etc.
Lighting is a weak point in my knowledge, I admit. It's something I have a lot to learn about.
Especially with the price of electricity now.

 

[polyarcturus]

its all good peep i didnt take any offense good conversation, im just a little smokey today so im acting goofy.

soil where i started and where i have ended, well not ended i play with both sytems still. and im still learning new stuff all the time. ive just done my research because ive been called out so many times i got tired of people poking holes im my theory's and my research i started double and triple checking things and just being smarter about how i went about looking for information... lol as im saying this my comp is warning my about my memory allocation to my browser. anyways i was just trying o be helpful its all good i dont think im the smartest thats for sure i just try to do my part.

 

[polyarcturus]

is why i still use my uvb bulb

im just voicin my opinion which is all we all can do an we all have a opinion if we have a brain
not tryin to convince nobody dont really care whut all do just sayin whut i do
unlike most i realize ther are a hundred ways to do every step of this game none wrong none right
whutever works best for you and your setup not whut the other guy does

you got it man!