Aussie Growers Thread

jzs147

jzs147

Well-Known Member
reza92 said:
you can’t run an led the same way as a hps and expect the same results. For starers hid’s give off huge amount of IR energy where leds do not so you need to run your room slightly warmer, with vpd and leaf temps coming into play with how much they’ll drink.

as for penetration I’m getting an easy foot of penetration off my single cutter pannel. It’s about finding the right height for the light so it penetrates the top foliage while not burning the colas.

id be using a solid 100w of led less than my hps and getting yeilds as good if not higher than my hps with no loss of quality. The colas generally be shorter and fatter but vs the hps tall and thin, but both are like rocks.
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Yeah i had mine at 400mm bout as close as i could get it.
Hmm yeah well i had a 315cmh and the 550 it was pretty fkn warm.
An i still think there shit.
In saying that. Thats my opinion only.
 
PURPLEB3RRYKUSH

PURPLEB3RRYKUSH

Well-Known Member

Freezer weed is some good fucking shit.

Reading through the Pile of curing weed thread I came across a link to a thread on ICMag about freeeze drying weed. https://www.icmag.com/ic/showthread.php?s=46332e1a18068cf99513a469b7c26fe8&t=186222 The thread spans like 6 years, I read it all the way through. Anyway after reading it I decided...
www.rollitup.org
 
Lucky Luke

Lucky Luke

Well-Known Member
jzs147 said:
Fuck knows they dont seem to penertrate the canopy as much.
Plants are shorter stockier
Just all round shit.
Buds are smaller
Growth seems slower.

Maybe its my style of growing i always try an have a thick bush in them 4x4 tents.

I was also running my tent the same as hps.
Still exhausting the tent.

Fuck knows leds aint for me
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leds require a warmer environment. Being were we are it might not be warm enough for most the year.

Most seem to require a grow or to to get em to work well. Even when im veging with leds i need to feed more cal/mag than what i would with CFL/MH
 
Lucky Luke

Lucky Luke

Well-Known Member
frared Radiation Creates Leaf Temperature Gradients Down the Canopy
HPS bulbs emit a large infrared peak between 800nm and 900nm. This infrared peak significantly increases leaf temperatures at the top of the canopy, where most of the infrared light is absorbed. When examining the differences between leaf temperatures of plants grown in the same room under either HPS or LED lights, we will see significant temperature differences that infrared light causes.

In one of our studies, cannabis consultant Dr. Matt Wheatley measured the photosynthetic activity and internal leaf temperature of leaves at different distances from the light source. The internal leaf temperature measurements were very clear. The leaves of plants under LEDs did not show an increase for internal leaf temperature significantly above the ambient room temp at any distance between 2’ and 4’ from the lamp. In contrast, the leaves of plants under the HPS lamps showed a wide range of internal temperatures; the highest temps were apparent at the top of the canopy and lowest internal leaf temperatures were at the bottom of the canopy. This partially explains why HPS lamps produce top-heavy crops while LED lighting creates a more uniform canopy.

Since the rate of carbon fixation by RuBisCO is affected by leaf temperature and CO2 concentration, increasing the ambient temperature in LED-lit rooms will increase the rate of photosynthesis and plant growth.

Raise the Temperature in a LED Room
Based on scientific study and experimentation, Cannabis Consultant Dr. Matt Wheatley has found that an increase in the ambient room temperature of 5-7°C in LED-lit rooms relative to temperatures in HPS grow rooms is necessary to achieve similar internal leaf temperatures and plant growth rates as those experienced by plants in HPS-lit rooms. Keep in mind that as the ambient room temperature increases, the relative humidity decreases, and proportionate adjustments should be made to the relative humidity to adjust your Vapor Pressure Deficits.



About LumiGrow, Inc.
 
jzs147

jzs147

Well-Known Member
Lucky Luke said:
frared Radiation Creates Leaf Temperature Gradients Down the Canopy
HPS bulbs emit a large infrared peak between 800nm and 900nm. This infrared peak significantly increases leaf temperatures at the top of the canopy, where most of the infrared light is absorbed. When examining the differences between leaf temperatures of plants grown in the same room under either HPS or LED lights, we will see significant temperature differences that infrared light causes.

In one of our studies, cannabis consultant Dr. Matt Wheatley measured the photosynthetic activity and internal leaf temperature of leaves at different distances from the light source. The internal leaf temperature measurements were very clear. The leaves of plants under LEDs did not show an increase for internal leaf temperature significantly above the ambient room temp at any distance between 2’ and 4’ from the lamp. In contrast, the leaves of plants under the HPS lamps showed a wide range of internal temperatures; the highest temps were apparent at the top of the canopy and lowest internal leaf temperatures were at the bottom of the canopy. This partially explains why HPS lamps produce top-heavy crops while LED lighting creates a more uniform canopy.

Since the rate of carbon fixation by RuBisCO is affected by leaf temperature and CO2 concentration, increasing the ambient temperature in LED-lit rooms will increase the rate of photosynthesis and plant growth.

Raise the Temperature in a LED Room
Based on scientific study and experimentation, Cannabis Consultant Dr. Matt Wheatley has found that an increase in the ambient room temperature of 5-7°C in LED-lit rooms relative to temperatures in HPS grow rooms is necessary to achieve similar internal leaf temperatures and plant growth rates as those experienced by plants in HPS-lit rooms. Keep in mind that as the ambient room temperature increases, the relative humidity decreases, and proportionate adjustments should be made to the relative humidity to adjust your Vapor Pressure Deficits.



About LumiGrow, Inc.
Click to expand...
Fuck man im not much of a reader.
No patience at all.
Fucked if i know didt work for me aint got patience for it either.
Been growing with hps for 5 years straight.
On an off for 10.
So yeah works for me.
 
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