Are LED's practical for a grow room? (24 ft x 12 ft)

Just gonna toss this in the fire

Regrettably inexperienced grower, but we all start somewhere.

Day 37 flower under some sexy Vero COB's (Close up picture at the bottom)



Only two or three colas that big on the plant. And the only plant of decent genetics in my tent. But I am expecting some pretty giant nugs off this plant. I have always seen LED buds as much more dense and 'tightly' packed, maybe smaller in some cases. The difference in flower sizes may be deceiving in many of those pics you showed, sure they are big, but they could be giant pillows.

This is all strain dependent of course. And can also be influenced by dozens of other factors.

I'll Persian shadow my way outta this argument now

707humboldt said:

Im with you on that 100%. If people want to use led and it works for them, great. But hps lighting is a superior light for sure if you don't care how much your power bill is and want to max your room out. Plenty of skin left after paying the power bill.

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42% efficient is definitely not better than 50-60%. Though it is significantly cheaper. Time will tell, check out some of the grows on this section. The preliminary results are quite nice under the new cobs.

If HPS works for you, cool beans.

What's best, is still up for debate.

707humboldt said:

You can't show me because it doesnt exist. Thats my point. I know all I need to know about led, its not as good as DE hps.

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Well you're wrong.

Either technology can be packed in tight enough to kill the plants.

LEDs don't need reflectors so at equal photon output LEDs deliver more photons to the canopy. Bridgelux and Cree COBs deliver 130-135 LPW at standard currents so they don't even need to be under driven to be more efficient than bulbs.

Very possible to grow over 1 GPW of dense sticky nugs with LED. 1.35 GPW so far and couldn't ask for better quality. I expect to achieve more personal bests.

To be fair, I know of a bulb grower who consistently achieves 1.5 GPW.

2 lbs under 1000w of anything isn't impressive any more.

Edit: That's what the hold outs will be called in the future. Bulb growers.

In a 24x12 room I might plan 2 5' rows with a walkway in the middle, so 240 square feet.

18 600w HPS bulbs (10800watts) or 10 1000w bulbs. (10000watts)

Cost over 6 years including 2 bulb changes $7000-8000

or

24 300 watt LED lamps. (7200 watts)
DIY cost for my ideal design $12000
Retail cost for quality units $20000

At the extreme the LED would be $13000 more. DIY would be only $5000 more.

3000 watts less will save about $2000 per year. DIY LED ends up being the exact same cost. Similar yield, 1500watts less heat.

707humboldt said:

Only anywhere when you make claims that led compares with hps yield do you need to have some kind of proof so any one will believe you . Other wise its just talk. Talk is cheap. Im really done now

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this is a big part of what i don't get it's seems you and Darth just want to come start shit neither of you have taken the chance to read any of the stuff that was presented to you then you have people first hand experience with these lights and you still got to belittle them for agreeing with you both of you come off as very ignorant people and would appear you have no desire to help anyone

Rahz said:

Well you're wrong.

Either technology can be packed in tight enough to kill the plants.

LEDs don't need reflectors so at equal photon output LEDs deliver more photons to the canopy. Bridgelux and Cree COBs deliver 130-135 LPW at standard currents so they don't even need to be under driven to be more efficient than bulbs.

Very possible to grow over 1 GPW of dense sticky nugs with LED. 1.35 GPW so far and couldn't ask for better quality. I expect to achieve more personal bests.

To be fair, I know of a bulb grower who consistently achieves 1.5 GPW.

2 lbs under 1000w of anything isn't impressive any more.


Edit: That's what the hold outs will be called in the future. Bulb growers.

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One of my first grows i achieved 7 pounds 2000 watts
you mention its very possible to grow over 1 gpw Yet its very very very few people that have achieved it
When Heath Robinson did that 600 watt Vert grow has anyone beat it ??? in terms of GPW since ,,,, today ..
To be fair With everyone talking efficiency,, shouldn't LED of surpassed HPS growers meaning why you even talking 1 GPW you should be adding that efficiency into the equation , into actual GPW meaning 50 percent better effciency ??
Should equate to 50 percent more yield 50- 70 percent more savings on power
So with that said that 300 watt Cob should be pounding min 450 - 600 dry grams from a novice grower with his eyes closed, are we seeing them numbers in real time ???
How is the plant stacking up to cob growth ,, for instance .
No one can deny that looking at realstyles video shows fairly tall stretchy plants with only top growth hardly any lateral growth ... also with that comes internodes far apart meaning the small bud structure when looking at lower end of the plants bud production there is known and if there is there extremely VERY VERY small .. now plants will grow directly under any LED / COB but place the plant 2 - 3 feet to the side and watch what happens even more stretch
i cannot find the link any more where they tested the par readings of LED 1 year later you be shocked ,, How it drops rapidly where for instance the DE after 1 year use still pounds out 95 percent of its rating ..
2.5 pounds is becoming the norm these days with the right strain under HPS and even up to 3 pound plants due to plant counts
But the real problem is the miss information out there you get allot of BS claims and why cause the LED Cob grower does not want to look like a failure
We all know it takes a lot of weed to make even 1 pound to be honest 4 pounds wet = 1 pound dry,, that is pretty good figures
So with that said you can see the bias , know one ever said LED or COB cannot grow they do but why the switch to COB possibly better penetration ,, it may look good on paper but when implemented it clearly shows its lacking something

Darth Vapour said:

One of my first grows i achieved 7 pounds 2000 watts
you mention its very possible to grow over 1 gpw Yet its very very very few people that have achieved it
When Heath Robinson did that 600 watt Vert grow has anyone beat it ??? in terms of GPW since ,,,, today ..
To be fair With everyone talking efficiency,, shouldn't LED of surpassed HPS growers meaning why you even talking 1 GPW you should be adding that efficiency into the equation , into actual GPW meaning 50 percent better effciency ??
Should equate to 50 percent more yield 50- 70 percent more savings on power
So with that said that 300 watt Cob should be pounding min 450 - 600 dry grams from a novice grower with his eyes closed, are we seeing them numbers in real time ???
How is the plant stacking up to cob growth ,, for instance .
No one can deny that looking at realstyles video shows fairly tall stretchy plants with only top growth hardly any lateral growth ... also with that comes internodes far apart meaning the small bud structure when looking at lower end of the plants bud production there is known and if there is there extremely VERY VERY small .. now plants will grow directly under any LED / COB but place the plant 2 - 3 feet to the side and watch what happens even more stretch
i cannot find the link any more where they tested the par readings of LED 1 year later you be shocked ,, How it drops rapidly where for instance the DE after 1 year use still pounds out 95 percent of its rating ..
2.5 pounds is becoming the norm these days with the right strain under HPS and even up to 3 pound plants due to plant counts
But the real problem is the miss information out there you get allot of BS claims and why cause the LED Cob grower does not want to look like a failure
We all know it takes a lot of weed to make even 1 pound to be honest 4 pounds wet = 1 pound dry,, that is pretty good figures
So with that said you can see the bias , know one ever said LED or COB cannot grow they do but why the switch to COB possibly better penetration ,, it may look good on paper but when implemented it clearly shows its lacking something

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you do realize you just explained why de is better and your numbers are way off as usual i hope you feel stupid o and you still haven't read the datasheets either huh?

Rahz said:

Well you're wrong.

Either technology can be packed in tight enough to kill the plants.

LEDs don't need reflectors so at equal photon output LEDs deliver more photons to the canopy. Bridgelux and Cree COBs deliver 130-135 LPW at standard currents so they don't even need to be under driven to be more efficient than bulbs.

Very possible to grow over 1 GPW of dense sticky nugs with LED. 1.35 GPW so far and couldn't ask for better quality. I expect to achieve more personal bests.

To be fair, I know of a bulb grower who consistently achieves 1.5 GPW.

2 lbs under 1000w of anything isn't impressive any more.

Edit: That's what the hold outs will be called in the future. Bulb growers.

Click to expand...

Who cares about gpw? Even though you just said you know a bulb grower that gets more. I care about total yield. He can not show me a led grow that gets AT LEAST 2lbs per 4x4 area.

You guys are comparing 1 and 2 light led grows in tents to garage and warehouse full of hps.

Pulling 4lbs out of a 4x8 tent is stellar as fuck no matter who you are or what your using.


This argument will never end and somehow people keep pulling record breaking numbers yet the best dispensaries in CA and CO can't even hit 2per light lots of times. I have spoken with quite a few who still teeter on 2/light

Got a pound in a 2 x 4... Same same. Led worked better.. No heat issues and light is still going strong.....

600hps continues in storage waiting for an improvement to its tech..

Really.. Those multiple light big setups are just taking advantage of massive overlap and no regard to electricity draw

ReeferDance said:

Just gonna toss this in the fire

Regrettably inexperienced grower, but we all start somewhere.

Day 37 flower under some sexy Vero COB's (Close up picture at the bottom)

View attachment 3423078

Only two or three colas that big on the plant. And the only plant of decent genetics in my tent. But I am expecting some pretty giant nugs off this plant. I have always seen LED buds as much more dense and 'tightly' packed, maybe smaller in some cases. The difference in flower sizes may be deceiving in many of those pics you showed, sure they are big, but they could be giant pillows.

This is all strain dependent of course. And can also be influenced by dozens of other factors.

I'll Persian shadow my way outta this argument now

Click to expand...

Belive what ever you want. Nothing deceiving about that picture. Lots of comparisons around you, trellising, lights, co2 burner, etc. No "pillows" over here. 2+ per 4x4 area, dense buds. You wouldn't know what that looks like though.

but hey i can show you 1 pound plants all day long grown under 1 k hell here is a 3 pound plant grown under 1000 watts how many plants would you have to pack into a grow room to achieve something like this in a LED or COB lol
Let not mickey mouse here power = bud size hell most LED and COB are comparible to a 400 watt HID and them be like watching paint dry how slow growth is hahaha and yield is a whole other story oh here a nice week 7 bud 2 more to go

I give up, you guys just don't know any better. Buy 1000w DE if you ever decide to grow in more than a tent. un-watch

Darth Vapour said:

but hey i can show you 1 pound plants all day long grown under 1 k hell here is a 3 pound plant grown under 1000 watts how many plants would you have to pack into a grow room to achieve something like this in a LED or COB lol
Let not mickey mouse here power = bud size hell most LED and COB are comparible to a 400 watt HID and them be like watching paint dry how slow growth is hahaha and yield is a whole other story oh here a nice week 7 bud 2 more to go

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Your buds are "pillows" says the guy who's buds are all leaf and no tricombs

TBH its a no brainer these people are blind and its the Blind leading the blind is LED or Cob good for that closet grower sure i guess could you get same or better results from T5 grow sure i have seen some amazing T5 grows
Yo this is for real styles before you chop them plants of yours please make sure to post some pictures of complete plant seperate you think it will be close to something like this i bet you 100 bucks not even close here is 2 plants whats the odds of these T5 grown plants out yielded your complete grow

It had nothing todo with less being just for small scale.

But the guy with the warehouse full of cross over light out the ass is trying to discredit the guy in the closet because of his situation.

We need apples to apples...not cherry tomatoes and watermelons.

707humboldt said:

Who cares about gpw? Even though you just said you know a bulb grower that gets more. I care about total yield. He can not show me a led grow that gets AT LEAST 2lbs per 4x4 area.

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Yea, total yield, check. 47 g/sqft here.

Photons are photons. Nothing magic about bulbs. Desired photon density can be reached with either and LED can do it with less watts. Not a lot to debate about those facts.

And this whole concept of one being better outside effeciency, not a matter of yield. You do realise there's upper limits to what a light can do? As I said, both led and hps can be set up to kill a plant with intensity... LED can do it with less watts, that's all.

But hey, maybe DE bulbs have magic in them

Gonna have to say no in that area LEDs are not practical price wise I couldn't see spending that much money I would go with the gavita DE fixtures. LEDs are great for smaller operations but they lack the coverage for large scale operations. And that video is redic those fixtures can cover a lot more area than those are coving you should be yielding a lot more with those gavitas.

Darth Vapour said:

TBH its a no brainer these people are blind and its the Blind leading the blind is LED or Cob good for that closet grower sure i guess could you get same or better results from T5 grow sure i have seen some amazing T5 grows
Yo this is for real styles before you chop them plants of yours please make sure to post some pictures of complete plant seperate you think it will be close to something like this i bet you 100 bucks not even close here is 2 plants whats the odds of these T5 grown plants out yielded your complete grow

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You have been setup for the kill dumb ass. I've grown 20lbs in 1 run before my accident and quitting the dispensary. When I hit my head it knocked some sense into me. Your weak shit is shit and now it's time to show everyone how fucking stupid you are with your own help and keep posting stupid shit please. I need your help

707humboldt said:

Who cares about gpw? Even though you just said you know a bulb grower that gets more. I care about total yield. He can not show me a led grow that gets AT LEAST 2lbs per 4x4 area.

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Anyone who actually cares about profit margins....

Answer me this question. What makes the HPS 'the best' please do tell. Explain what makes this tech tick since we are all clearly retarded.

The answers have been placed right in front of you.. you just take pot shots at them.