Who else is dissapointed with crop using LED panel?

blake9999

blake9999

Well-Known Member
@grassy007 you buy the cheapest piece of crap light and are dissapointed with the results, then blame ALL LED's for your problem. obviously you didn't do research on the subject otherwise you would have stayed far far away from those Chinese lights. Read up on COB's, Quantum Boards, and Strip lights that others are using, with great success, then come back and try again.
 
tywashere

tywashere

Well-Known Member
Have you considered that your parameters are off? Alot of people don't realize this, but if you're growing under LED you need higher temperatures, sometimes as high as 10 degrees Fahrenheit warmer than what is acceptable under HPS lights. Plant metabolism is modulated by the temperature of the root ball, as well as the stalks/leafs. So maybe consider checking your parameters (temperature, humidity, PAR value across canopy etc) before you write off something as a bad product.
IMG_20180131_151837.jpg
Was a cold day and I had the tent open for too long while watering, so the therm reads 78, but I keep it around 82-84 at the upper canopy level. Believe me if you're running your room at 75 degrees with efficient LED lights, those ladies are FREEZING
https://www.blackdogled.com/lst
 
wietefras

wietefras

Well-Known Member
ANC said:
Yep, my girls are averaging about 32 to 34 degrees during the day, and they are super happy.
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Do you use a heater to get it that hot though? I'm struggling to get over 28C and on a humid day I need to vent more air and the temperature gets even lower.
 
tywashere

tywashere

Well-Known Member
ANC said:
Yep, my girls are averaging about 32 to 34 degrees during the day, and they are super happy.
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You're using QB's right? Do those facilitate higher temperatures? I just got back into this 'hobby', I ended up buying 420 (actualy watts) of LED panels off amazon. They're full spectrum COBs, they're the highest rated panels on amazon. But I think they put off quite a bit of "heating" light. I'm very intrigued by the link between temperature, plant metabolism, and how that effects LED. I was having a discussion with someone about the implications of running higher ambient temperatures with ultra efficient LED lights, and how that compared to the overall plant temperature. (IE, an HPS with proper Leaf surface temperature would have a lower root zone temperature etc. anyway I'll end this post here as this seem like a discussion for another thread.
 
greg nr

greg nr

Well-Known Member
tywashere said:
You're using QB's right? Do those facilitate higher temperatures? I just got back into this 'hobby', I ended up buying 420 (actualy watts) of LED panels off amazon. They're full spectrum COBs, they're the highest rated panels on amazon. But I think they put off quite a bit of "heating" light. I'm very intrigued by the link between temperature, plant metabolism, and how that effects LED. I was having a discussion with someone about the implications of running higher ambient temperatures with ultra efficient LED lights, and how that compared to the overall plant temperature. (IE, an HPS with proper Leaf surface temperature would have a lower root zone temperature etc. anyway I'll end this post here as this seem like a discussion for another thread.
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Facilitate Higher temps? How do you mean?

With LED's, you can have a higher air temp because the lights are putting out very little IR. Whereas an HID is over 15% IR.

The IR waves will raise the leaf temps all on their own.

So not only can you run the room warmer with LED's, a lot of people say to not run them below 80, and probably closer to 84 if you can.
 
tywashere

tywashere

Well-Known Member
greg nr said:
Facilitate Higher temps? How do you mean?

With LED's, you can have a higher air temp because the lights are putting out very little IR. Whereas an HID is over 15% IR.

The IR waves will raise the leaf temps all on their own.

So not only can you run the room warmer with LED's, a lot of people say to not run them below 80, and probably closer to 84 if you can.
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Sorry, my wording was a bit off, by "facilitate higher temperatures" I meant QB's should allow you to run higher temperatures without ill effects. He says he's running temps in the 90's, so I was curious if QB's were allowing that, I know with my lights if the temps were in the 90's, they would be getting major heat stress.
 
zem

zem

Well-Known Member
I know from LED growers that they use about half the dosage of ferts compared to hps. If the plantrs are dark green and overfed it will affect potency negatively IME
 
1

1212ham

Well-Known Member
grassy007 said:
While Chinese companies make millions selling blurple LED lights, a few of us buyers of those are wondering. Do you feel bummed out with your grow(s) after you did everything else to insure a potent crop using them? I do. I bought a BestVA 1000w blurple LED light for $139 six months ago. The price has since fluxuated between $99 and at present $109. My two grows were lacking in potency, even tho the plant grew nicely. The only thing is... on both separate grows (one plant grow), the leaves took on a dark green color and the potency of the buds weren't good at all, even tho they looked great. Can just one person here relate to that? The dark green leaf color wasn't due to over feeding nitrogen, so forget that. The reason both grows took on a dark green color and weren't that potent was due to one thing and one thing only. Lack of light intensity. Look it up. A plant that grows healthy but has dark green leaves and lacks a punch is because the plant is overproducing chlorophyll in order to try and compensate for the lack of light intensity. So...add me to the list of those who experienced what I did and confirmed what I did. $100 Chinese blurple lights will NEVER produce a crop with a potent THC content. The plant may produce beautiful candy trichromes, but with low THC content. End of rant and thanks for reading.
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From November 22: "Your light was crap, as people have been saying in this thread and others." https://www.rollitup.org/t/first-grow-not-very-potent.953584/

Amazing, newbie grower gets poor results with $129 Amazon junk.....
"Compares to 600 watt HPS while consuming only 185 watts! Twice effective coverage area than any Reflector Series lights, perfect for a 5.1' x 4.7' growing area at 24" height"
 
Humple

Humple

Well-Known Member
1212ham said:
From November 22: "Your light was crap, as people have been saying in this thread and others." https://www.rollitup.org/t/first-grow-not-very-potent.953584/

Amazing, newbie grower gets poor results with $129 Amazon junk.....
"Compares to 600 watt HPS while consuming only 185 watts! Twice effective coverage area than any Reflector Series lights, perfect for a 5.1' x 4.7' growing area at 24" height"
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What the fuck. The audacity of this seller's bullshit marketing is staggering. I've seen some egregious shit in the Chinese blurples market, but this is a new low. 185 watts for a 5x4 space? You'd be better served by paying someone that money to kick you right in the wedding tackle.
 
since1991

since1991

Well-Known Member
I was under the impression that you want to buy or build highly efficient cobs and quantum boards. HLG or do it yourself is the only way to go Is what I heard. That being said....I like a room packed with Gavita pro fixtures. Ive seen what the blurples do..it aint much. Suckers light for the most part. They veg allright. Nothing much more than a t5 though. Cmh lamps veg like a muther fucker. Fact! Like an old school halide on steroids. At a quarter or half of the wattage. Fact.
 
Humple

Humple

Well-Known Member
tywashere said:
Have you considered that your parameters are off? Alot of people don't realize this, but if you're growing under LED you need higher temperatures, sometimes as high as 10 degrees Fahrenheit warmer than what is acceptable under HPS lights. Plant metabolism is modulated by the temperature of the root ball, as well as the stalks/leafs. So maybe consider checking your parameters (temperature, humidity, PAR value across canopy etc) before you write off something as a bad product.
View attachment 4084200
Was a cold day and I had the tent open for too long while watering, so the therm reads 78, but I keep it around 82-84 at the upper canopy level. Believe me if you're running your room at 75 degrees with efficient LED lights, those ladies are FREEZING
https://www.blackdogled.com/lst
Click to expand...
The difference in plant health at 80+ degrees (F) compared to mid-70's is huge. Well, depending on the strain, of course (our universal caveat) - I do have one pheno that trucks along just fine, even in the low 70's, but everything else really struggles unless I keep things nice and warm.
 
since1991

since1991

Well-Known Member
What happened to the bare bulb hps vert crowd? They been quiet lately. All the rage just a few years ago. Silent.
 
since1991

since1991

Well-Known Member
Humple said:
The difference in plant health at 80+ degrees (F) compared to mid-70's is huge. Well, depending on the strain, of course (our universal caveat) - I do have one pheno that trucks along just fine, even in the low 70's, but everything else really struggles unless I keep things nice and warm.
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Yes. I rock my veg room and early in flower rooms in the low and sometimes mid 80's and high rh. They respond accordingly. So fast. Warm amd humid like a greenhouse is how I rock veg and early flower. And lots of co2 and water with just mild fertigation. Here in Michigan...space heaters for me. 24 hours in veg room and 12 hour nights in my cold ass basement. Love me some Nov. to April indoor crops. Churning out flower production like buttuh!!! And processed into cheddar!!!
 
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Humple

Humple

Well-Known Member
since1991 said:
Yes. I rock my veg room and early in flower rooms in the low and sometimes mid 80's and high rh. They respond accordingly. So fast. Warm amd humid like a greenhouse is how I rock veg and early flower. And lots of co2 and water with just mild fertigation. Here in Michigan...space heaters for me. 24 hours in veg room and 12 hour nights in my cold ass basement. Love me some Nov. to April indoor crops. Churning out flower production like buttuh!!! And processed into cheddar!!!
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I'm a Michigan basement grower as well. It certainly presents its challenges. Especially in this exceptionally cold winter we're having this year.
 
hybridway2

hybridway2

Amare Shill
I saw your dense buds from the grow.
If you didn't have intensity then they'd be flrafy.
Adding those cfks prob saved your ass & at least allowed the buds to form proper shape.
 
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