What's your top yield with LED?

Tesla1200

Tesla1200

Member
Hi i'm migrating from 1200W of HPS to 2x650W LED in a 4x8 tent (1.2x2.4m)
When i try new lights like LED i look for the Best yields, I'm not paying 1000$ for a light wich not works as good as sodium.

Well just asking what Lights do u use actually what medium and technice and what's your yields.

Mine is:

HPS SODIUM 2x600W, sog coco slab from cuttings, average yield around 1100-1200g.

Hope that LED shows a better yields and Also high Quality buds.
 
StareCase

StareCase

Well-Known Member
Tesla1200 said:
... just asking what Lights do u use actually what medium and technice and what's your yields ...
Click to expand...
This spring, converted from blurples to the HLG 320 RSpec (3 QB288's = 340 wall watts) in a 2 x 4 SCROG using 5 gallon buckets and a soil/Pro Mix blend. Highest yield to date = 15.3 oz. cured and I am still "dialing in" the QB environment.

Apart from the finished weight, there were other aspects that I noticed:
  1. Cool and quiet operation
  2. Slightly frostier bud
  3. More "meat" and less sugar leaf
  4. Smoother smoke. (I believe this is what we all prefer.)

So IMHO, it was worth the $600 to upgrade from the blurples.

Hope that helps.
 
Tesla1200

Tesla1200

Member
StareCase said:
This spring, converted from blurples to the HLG 320 RSpec (3 QB288's = 340 wall watts) in a 2 x 4 SCROG using 5 gallon buckets and a soil/Pro Mix blend. Highest yield to date = 15.3 oz. cured and I am still "dialing in" the QB environment.

Apart from the finished weight, there were other aspects that I noticed:
  1. Cool and quiet operation
  2. Slightly frostier bud
  3. More "meat" and less sugar leaf
  4. Smoother smoke. (I believe this is what we all prefer.)

So IMHO, it was worth the $600 to upgrade from the blurples.

Hope that helps.
Click to expand...
Nice yield bro thats a very good result.
 
Southside112

Southside112

Well-Known Member
I'm in a 3x3 with 440 watts of cobs and qb.
Average yeild with 4 plants in 3 gallon pots (soil) is 8-12 ounces.
When I use my rdwc setup in the same 3x3 I get 16-20 ounces.
Usually top once and run plants through a trellis.
 
Renfro

Renfro

Well-Known Member
I have pulled "about a pound" out of a 2x4 tent with my cob LED and I know I could do better. If you tune your environment properly for LED and you have a good light, not some shitty blurple, then you can yield as good if not better than HPS. I have grown HPS since 1989 and it's only the last few years that LED lighting has started to impress me.

One big factor is achieving proper leaf surface temperatures (LST for purposes of this post). With HPS you get a lot of infrared, that warms up surfaces it hits (leaves). The LED lacks this abundance of IR and therefore you need warmer canopy temperatures to compensate. If the LST is too cold, growth slows to a crawl and yield suffers. I have found that a canopy temperature in the mid 80's works well for LED.

I noted the buds under LED were denser than the same cut under HPS. I noticed the terpene content was as good if not better. The bag appeal of the nugs is just better.

So I am a believer in LED now and it is only going to get better.

The energy savings are significant since you are using less watts, cooling less watts and your temp set point is higher. Some LED growers actually find they need to get creative and add heat during the cold months.
 
Dopesmoka

Dopesmoka

Well-Known Member
Southside112 said:
I'm in a 3x3 with 440 watts of cobs and qb.
Average yeild with 4 plants in 3 gallon pots (soil) is 8-12 ounces.
When I use my rdwc setup in the same 3x3 I get 16-20 ounces.
Usually top once and run plants through a trellis.
Click to expand...
How long do you veg
My bad I’m faded lightweight faded off my sugar cone I just grew but I thought you were talking per plant
 
Southside112

Southside112

Well-Known Member
Dopesmoka said:
How long do you veg
My bad I’m faded lightweight faded off my sugar cone I just grew but I thought you were talking per plant
Click to expand...
Usually veg around 5 weeks. Yeah those are dried totals of 4 plants combined. So 2-3 zips per plant in soil and 4-5 zips per plant in rdwc. Sometimes more in rdwc.
 
StareCase

StareCase

Well-Known Member
Renfro said:
... One big factor is achieving proper leaf surface temperatures (LST for purposes of this post). With HPS you get a lot of infrared, that warms up surfaces it hits (leaves). The LED lacks this abundance of IR and therefore you need warmer canopy temperatures to compensate. If the LST is too cold, growth slows to a crawl and yield suffers. I have found that a canopy temperature in the mid 80's works well for LED ...
Click to expand...
Yes sir ... learned that one the hard way.

The blurples had a few IR's which helped to increase the LST. After swapping with the QB's, the internal temperatures dropped to mid 70's (at best) and the plants looked anemic during the stretch when they should have grown with the most vigor. I put the driver back on top of the heat sink and reduced the exhaust rate a touch which helped to raise the internal temps about 10 degrees.

BOOYAH!! Noticed a really big difference within 1 day
 
Tesla1200

Tesla1200

Member
Renfro said:
I have pulled "about a pound" out of a 2x4 tent with my cob LED and I know I could do better. If you tune your environment properly for LED and you have a good light, not some shitty blurple, then you can yield as good if not better than HPS. I have grown HPS since 1989 and it's only the last few years that LED lighting has started to impress me.

One big factor is achieving proper leaf surface temperatures (LST for purposes of this post). With HPS you get a lot of infrared, that warms up surfaces it hits (leaves). The LED lacks this abundance of IR and therefore you need warmer canopy temperatures to compensate. If the LST is too cold, growth slows to a crawl and yield suffers. I have found that a canopy temperature in the mid 80's works well for LED.

I noted the buds under LED were denser than the same cut under HPS. I noticed the terpene content was as good if not better. The bag appeal of the nugs is just better.

So I am a believer in LED now and it is only going to get better.

The energy savings are significant since you are using less watts, cooling less watts and your temp set point is higher. Some LED growers actually find they need to get creative and add heat during the cold months.
Click to expand...
The worst thing it's to have to add heat in cold sites. If u pay 1000$ for a light that works like sodium but u need a heater 2000w .
 
Kerovan

Kerovan

Well-Known Member
StareCase said:
This spring, converted from blurples to the HLG 320 RSpec (3 QB288's = 340 wall watts) in a 2 x 4 SCROG using 5 gallon buckets and a soil/Pro Mix blend. Highest yield to date = 15.3 oz. cured and I am still "dialing in" the QB environment.

Apart from the finished weight, there were other aspects that I noticed:
  1. Cool and quiet operation
  2. Slightly frostier bud
  3. More "meat" and less sugar leaf
  4. Smoother smoke. (I believe this is what we all prefer.)

So IMHO, it was worth the $600 to upgrade from the blurples.

Hope that helps.
Click to expand...
How do you fit 3 of those QB's in a 2x4. One light is 1x3... I use a single one of those in my 2x4...
 
StareCase

StareCase

Well-Known Member
Kerovan said:
... How do you fit 3 of those QB's in a 2x4. One light is 1x3... I use a single one of those in my 2x4 ...
Click to expand...
Sorry about that ... I see I wasn't clear. My bad ...

You are correct in that I only have 1 light in the 2 x 4. The unit is comprised of 3 of their QB288's on the 1 x 3 heat sink. Even though I have a few successful flowering cycles under my belt, I feel that I am still learning the finer points of using this rig.

I gather that you like this light as well?
 
TheManicOrganicDK

TheManicOrganicDK

Well-Known Member
I am at the moment testing out the new Lumatek Led, Zeus 600w pro, in a side by side test set-up, to try figure out how the led does compared to hps.
In week 6 atm, so havent gotten an answer just yet,but its on the way.

32 equal sized clones from same motherplant, 16 under led, 16 under hps.
So far it seems that the led side is a bit bigger, so i am tempted to believe that the led is supporting a bit more growth, both in stretch and bud development.
 
Tesla1200

Tesla1200

Member
TheManicOrganicDK said:
I am at the moment testing out the new Lumatek Led, Zeus 600w pro, in a side by side test set-up, to try figure out how the led does compared to hps.
In week 6 atm, so havent gotten an answer just yet,but its on the way.

32 equal sized clones from same motherplant, 16 under led, 16 under hps.
So far it seems that the led side is a bit bigger, so i am tempted to believe that the led is supporting a bit more growth, both in stretch and bud development.
Click to expand...
How many degrees rise the Zeus your environment?
 
TheManicOrganicDK

TheManicOrganicDK

Well-Known Member
Tesla1200 said:
How many degrees rise the Zeus your environment?
Click to expand...
It has lowered the avarage degree in the tent. the led replaced an hps, so exhaust is running less already. ( Use 1 x led and 3 x hps, in a 240x240 tent )
But i am changing the last 3 hps in january, and then i can remove my air intake, as temps are so much down i can just go with co2 and drop my big intake/exhaust fans.

Lumatek states that the 600wZeus is reducing HVAC with 30-40% compared to open hooded hps.
 
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