Tolerance Break
Well-Known Member
I dont mean to be condescending, but I feel as though this applies more to a HPS lit environment. The lack of infra red means my temp and humidity have to be higher to achieve the ideal VPD.
Northern lights losing stickiness and smell
- Thread starter Jonty420
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jimihendrix1
Well-Known Member
I dont think so. The only thing about LED is one may have to raise temperatures up because they dont create as much heat.
They would still both require the same temperatures regardless of light source.
Ive never found my Gavita 1700e requires hotter temps than my 1000w Hortilux HPS. One you may have to raise the temps, and the other you may have to lower the temps.
I myself cant control the temps like as in the chart. Mine both usually run at 80f-84f, and 50% humidity throughout the entire grow. One thing I do have is tremendous air flow.
They would still both require the same temperatures regardless of light source.
Ive never found my Gavita 1700e requires hotter temps than my 1000w Hortilux HPS. One you may have to raise the temps, and the other you may have to lower the temps.
I myself cant control the temps like as in the chart. Mine both usually run at 80f-84f, and 50% humidity throughout the entire grow. One thing I do have is tremendous air flow.
Tolerance Break
Well-Known Member
Im referring to this
TL DR LED's emit no IR, so to achieve similar metabolic rates found in HID or greenhouse conditions at 78F air temp, LED growers need to run the room air temp at 83F-85F. Air temp can also be lowered by 3F-5F in the last 2 weeks of flower to enhance ripening
Growing With LED Lights - Best Practices | CA Lightworks
From positioning of the lights to temperature and humidity, California Lightworks has your go-to guide for growing with LED lights. Read more.
californialightworks.com
VincenzioVonHook
Well-Known Member
Sometimes I wonder how meaningful the single or dual IR diodes spread over 200-400 total diodes is with most LEDs. Seems like the just throw a single diode onto most smaller quantum boards just for marketing..Im referring to this
TL DR LED's emit no IR, so to achieve similar metabolic rates found in HID or greenhouse conditions at 78F air temp, LED growers need to run the room air temp at 83F-85F. Air temp can also be lowered by 3F-5F in the last 2 weeks of flower to enhance ripening
Growing With LED Lights - Best Practices | CA Lightworks
From positioning of the lights to temperature and humidity, California Lightworks has your go-to guide for growing with LED lights. Read more.
For example I have a 120w quantum board here that has 230 something diodes, and a single IR diode on the left hand side for some reason. I wouldn't image half a watt of IR is that effective
thefullspectrum
Well-Known Member
Yeah 1 or 2 pumping .5 w are pretty well useless. Mostly marketing bullshit. Better off using a seperate booster board for ir and/or uv. More control.
Bonus being you can also use as a flower initiator and sunrise sunset switch aswell.
VincenzioVonHook
Well-Known Member
I was thinking of soldering a few IR diodes onto the 10s single strip PCBs you can get on eBay for next to nothing...for example epistar IR cobs run for a few dollars a pack on eBay, and the 10s PCB strips for a few dollars, 24v/700ma drivers are next to nothing as well.
thefullspectrum
Well-Known Member
Yes for sure. Very satisfying building your own equipment then smoking the returns.
Ali express sell all that shit for even less if you can wait a bit longer for delivery. Hot red store have pcb's and quality Cree diodes dirt cheap.
Or the various boosters (qb10, qb20 etc) from Kingbrite (Alibaba) are great value only if you can nab a first user or a sales shipping discount, otherwise shipping is more than the products. They use Cree and Lg diodes. meanwell drivers. Proven results.
I've learnt in my dodgy lighting experiments, that cheap cobs and/or cheap drivers are only good for heat and gaining experience. Im more prepared to now spend a bit more and get something reliable and efficient. Pays you back in no time.
calvin.m16
Well-Known Member
@jimihendrix1 quoted the above from:
Cannabis Humidity in the Grow Room | Homegrown Cannabis Co.
Cannabis humidity must be maintained at optimum levels throughout the grow cycle so that your plants are not impacted. Here's how to control humidity!
homegrowncannabisco.com
Not going to lie Kyle Kushman gives some kinda shit advice in his books and blogs.
| Vegetative | 62.4 – 82.4°F | 40-70% |
If you run your veg at 62 °F you're an idiot and certainly are going to run into issues..
calvin.m16
Well-Known Member
Most LED fixtures these days in fact do have IR chips installed on them. It's nothing to do with that for temperatures.
LED don't put off as much Radiant heat to the plants in general, this is why a higher temperature is required to get the plants to the optimal LST or Leaf Surface Temperature for them to function optimally..
HPS put off much more Radiant heat which will require monitoring the air temperatures and keeping them lower to not heat stress the plants, typically anything 80+ °F can begin to stress most plants in flower especially. Depending on your HPS distance to the plants the plant itself could be as hot as 5 °F hotter than the air its in.
I feel like lots of people giving advice on LED or HPS haven't used both and have no business giving advice on it.
Get learnt:
How Heat Production of LED and HPS Grow Lights Affect Air And Leaf Temperature | P.L. Light Systems
How a lighting system can affect the air and leaf temerature in your growing facility
pllight.com
Nizza
Well-Known Member
I didn't know your variables when I posted. Leds you wanna run higher temps and humidity because of lack of Ir but of course you need to be careful when you start to bud up. On the final few weeks though I will shorten light cycle, and temps to help with terps. Humidity max should probably be 55 or so, 40-45 would be ideal
jimihendrix1
Well-Known Member
I take it as 62f being the low when lights are out, and a max of 82f when the lights are on. Id never veg at 62f when lights are on. You would also risk fertilizer burn if giving full strength nutrients at that low of a temperature because metabolism would be slow.. Plants use less nutrients the cooler it is.@jimihendrix1 quoted the above from:
Cannabis Humidity in the Grow Room | Homegrown Cannabis Co.
Cannabis humidity must be maintained at optimum levels throughout the grow cycle so that your plants are not impacted. Here's how to control humidity!
Not going to lie Kyle Kushman gives some kinda shit advice in his books and blogs.
If you run your veg at 62 °F you're an idiot and certainly are going to run into issues..
Vegetative 62.4 – 82.4°F 40-70%
Plenty of times in my neck of the woods it gets in the low 60s in the spring, and I detect no adverse reactions. I get 10ft tall plants outside when done.
I myself veg 24/7, and temps are 78ff-85f.
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