UV Amount

Hi there, I'm completely new to led and I ordered 20m of smd 5050, 3R:1B 15m of red and 5 of blue, I was looking at uv lights and I wondered how many should I buy but I couldn't find any information on the relation for UV, could any of you guys give me some advice? thank you in advance :weed:
 

littlejacob

Well-Known Member
Bonjour
Your are new to led and ask advices after you bought leds???
Why didn't you ask before?
To have an answer you should tell us the size of the bloom space you want to light!?
CU
 

Getgrowingson

Well-Known Member
Bonjour
Your are new to led and ask advices after you bought leds???
Why didn't you ask before?
To have an answer you should tell us the size of the bloom space you want to light!?
CU
He's asking about uv leds which if you read it he says he hasn't bought them yet. I'm not trying to be a dick here but I constantly see you coming to conclusions before reading peoples posts. And it comes off as if your being an ass. I know your not because I do appreciate all the help you give to people. But if your second language is English then maybe proofread before posting. My second language est le Francais alors je dois lissez deux ou trois fois pour comprender. You are definitely an asset and don't take my comment to hard. To answer. Uv leds aren't the greatest option these days. Most go for the reptile fluorescent bulbs for uv.
 

Stephenj37826

Well-Known Member
Hi there, I'm completely new to led and I ordered 20m of smd 5050, 3R:1B 15m of red and 5 of blue, I was looking at uv lights and I wondered how many should I buy but I couldn't find any information on the relation for UV, could any of you guys give me some advice? thank you in advance :weed:
There was some info floating around suggesting 10% of the total wattage is what you should add in uvb. Now take that with a grain of salt as this was not science based but just what a few growers had reported as the amount that gave them the best results. That being said as stated lizard cfl would be the easiest and get you true uvb. Alot of the LEDs that claim uv aren't uvb which defeats the purpose.
 

littlejacob

Well-Known Member
Bonjour
I was talking about smd strip...for a micro grow what would you use!??
Cxa/b 1816 2520/30 vero 10/13? Or blue and red strip?
I wasn't talking about UV
But I agree reptile bulbs is the way to go...many users light it 4h during week 4/5/6 bloom to enhance frosting...!
I learn English only 4 years at school 30 years ago...so some times I can be a little bit too direct because of my lack of vocabulary...and yes sometimes after repeat the same thing 10 times a day...pm box is full here and in france...so yes sorry if I look like a rude asshole (I start to get slang...lol)...but now that I have finish a complete grow under my cxb3590...it is so easy to make big crop under those that I want everyone to be happy as me...but I do not take the good way sometimes...
But if you really want to change something try 730nm...it will shortened bloom time or will allow you to go 14/10 for more weight without change bloom period!
CU
 
Bonjour
Your are new to led and ask advices after you bought leds???
Why didn't you ask before?
To have an answer you should tell us the size of the bloom space you want to light!?
CU
There was some info floating around suggesting 10% of the total wattage is what you should add in uvb. Now take that with a grain of salt as this was not science based but just what a few growers had reported as the amount that gave them the best results. That being said as stated lizard cfl would be the easiest and get you true uvb. Alot of the LEDs that claim uv aren't uvb which defeats the purpose.
reptile bulbs or cfls do the trick
He's asking about uv leds which if you read it he says he hasn't bought them yet. I'm not trying to be a dick here but I constantly see you coming to conclusions before reading peoples posts. And it comes off as if your being an ass. I know your not because I do appreciate all the help you give to people. But if your second language is English then maybe proofread before posting. My second language est le Francais alors je dois lissez deux ou trois fois pour comprender. You are definitely an asset and don't take my comment to hard. To answer. Uv leds aren't the greatest option these days. Most go for the reptile fluorescent bulbs for uv.
Thank you all for your answers, I found some reptile lights with uvb and I intend to put them on for 1h a day, anyway I was looking at this chart.
plant_absorb_spectrum_grande.jpg
And I'm thinking I could put on the UVA LED (390-405nm) along with the blue ones, it's ok to put 10% of the amount of watts? could uva burn my plants the way uvb does? thank you again it's been very helpful
My panel is 50cm*40cm and the closet 1m tall. :D
 

J-Icky

Well-Known Member
I would recommend a reptile light over just a single band of uva or uvb. The reptile bulbs give both and a more natural blend, while the single band effects are largely unknown and are far more likely to cause serious damage to you and your plants.
 

superbak3d

Well-Known Member
If you're going to use reptile bulbs, it should only be the last few weeks before harvest, and for only about 2 hours a day.

Ideally you can just use spiral CFLs. They emit small amounts of UVB, not enough to hurt your plants, but just enough to increase resin production. They're easy to position and you can get them really close to your buds without burning them.
 
I would recommend a reptile light over just a single band of uva or uvb. The reptile bulbs give both and a more natural blend, while the single band effects are largely unknown and are far more likely to cause serious damage to you and your plants.
If you're going to use reptile bulbs, it should only be the last few weeks before harvest, and for only about 2 hours a day.

Ideally you can just use spiral CFLs. They emit small amounts of UVB, not enough to hurt your plants, but just enough to increase resin production. They're easy to position and you can get them really close to your buds without burning them.
Alright now I'm starting to understand uv light! thanks for the info I've found the perfect one according to your specifications
http://es.aliexpress.com/store/product/1Pcs-lot-Reptile-Compact-Fluorescent-Vivarium-Lamp-Light-10-0-UVB-UVA-UV-26W-E27-Screw/1771334_32449273683.html?spm=2114.04020208.3.2.y2LW2i&ws_ab_test=searchweb201556_1,searchweb201644_2_10001_10002_10005_10006_10003_10004_62,searchweb201560_2,searchweb1451318400_6150 ^^
 

superbak3d

Well-Known Member
Yea, those reptile ones you only want to run when you're getting close to harvest time. And only for a short period of time each day.
 

ttystikk

Well-Known Member
Thank you all for your answers, I found some reptile lights with uvb and I intend to put them on for 1h a day, anyway I was looking at this chart.
View attachment 3582520
And I'm thinking I could put on the UVA LED (390-405nm) along with the blue ones, it's ok to put 10% of the amount of watts? could uva burn my plants the way uvb does? thank you again it's been very helpful
My panel is 50cm*40cm and the closet 1m tall. :D
UVA does not excite your plants the way UVB does. It's not very desirable.
 

ttystikk

Well-Known Member
Hahaha I took French a loooooong time ago. The verbs are what get me everytime. I'm sure you understood.
Ah, so YOU want a free pass for being ignorant in a second language, but you spent time and effort berating someone else for trying to use their skills productively?

That's a pretty shitty double standard ya got there, why don't you own your bias and admit you're a xenoglossophobe?

-Or maybe just an ass.
 

Getgrowingson

Well-Known Member
Ah, so YOU want a free pass for being ignorant in a second language, but you spent time and effort berating someone else for trying to use their skills productively?

That's a pretty shitty double standard ya got there, why don't you own your bias and admit you're a xenoglossophobe?

-Or maybe just an ass.
I wasn't tearing down his english at all homie. I clearly said he should read it twice before commenting. We're all trying to help and learn here. I don't think he took it as hard as you did. I put forth an option to the OP as well about using florescent tunes. Smoke up and chill out
 
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