How much more yield with a good LED 1k vs 600 hps

[farmingfisherman]

It’s like an infomercial for cook ware
By now we would all own lifetime pans and knives

To a lighting companies credit, its 1000 watt led that uses a 100 actual watts might be equal to a 1000 HPS over a 4 square inch area hung what, maybe 6 inches above the canopy?

 

[Herb & Suds]

To a lighting companies credit, its 1000 watt led that uses a 100 actual watts might be equal to a 1000 HPS over a 4 square inch area hung what, maybe 6 inches above the canopy?

You could grow a dozen asparagus in that much space

 

[ANC]

Need at least a 480W driver to cover a 4x4, but it will leave money on the table over a larger light, on the plus side it is a bit cheaper to run and can still yield adequately

 

[Meast21]

I mean 1000W Led that is equivilant to 1000 watt hps.... So my question is how much more will a 4x4 tent yield with a 1000W Led vs a 600W hps. The 600 Watt I'm getting 9.5 oz's for my 2 plants that are bad yielders. Can I expect 12 oz's with the 1000W LED?

 

[PJ Diaz]

1000w of LED is overkill for a 4x4 space. You will likely light stress your plants and yield less.

 

[speedwell68]

I got 19oz from 4 TS1000 clones, that is 600w true watts in a 4x4 area. I wouldn't want to run more than that in a 4x4, IMHO there is a law of diminishing returns.

 

[Sauron]

IMHO there is a law of diminishing returns.

It's not just your opinion..it's a fact.

 

[coreywebster]

I mean 1000W Led that is equivilant to 1000 watt hps.... So my question is how much more will a 4x4 tent yield with a 1000W Led vs a 600W hps. The 600 Watt I'm getting 9.5 oz's for my 2 plants that are bad yielders. Can I expect 12 oz's with the 1000W LED?

There is only the power draw.
Please ignore anything that says equivalent to.
Because there's hundreds that make claims like that and most are not to be trusted.

Are you getting 9.5oz per plant OR 9.5oz between both?

At the end if the day if you used a watt for watt swap. 600w LED will produce more light so you should increase yield by 1/3 providing everything else remains the same.

But you need to ask why you only get that 9.5oz, assuming that's total weight.

What's your grow style, straight up no training, Christmas tree style?
What's your veg time?
What's your plant health like?
What's your extraction (air exchange) like? Is it recirculating the same room, properly vented outdoor?
How old your bulb?

Are you doing something wrong is the general gist of what I'm saying.

All this is assuming your only pulling 9.5oz from a 600w hps , which is the impression I got from your first post.

 

[.Smoke]

It's really easy to get 1g per watt even with lm281b diodes so.... 480w should give you a lbs.

 

[speedwell68]

It's not just your opinion..it's a fact.

Yep. I put IMHO because I don't know where the point of no extra gain lies.

 

[Meast21]

It's really easy to get 1g per watt even with lm281b diodes so.... 480w should give you a lbs.

Not with this strain I'm doing now. I had an issue with a previous strand and turned my grow room upside down and I had to start over for the 1st time in 7 years. I got 2 clones and started 4 seeds and all the seeds turned out to be shit strains and now I'm left with the 2 clones. The one being a shit yielder and the other one the yields are 30% better. Both strains are liked by the people that buy from me now I'm stuck with them for now. Both these new strains get light bleaching too, when other strains I did didn't get this. No heat stress bc the leaves don't canoe, but they just turn yellow/white towards the last few weeks of flower. Doesn't seem to effect the quality, like I said my people like these strains.

 

[Meast21]

There is only the power draw.
Please ignore anything that says equivalent to.
Because there's hundreds that make claims like that and most are not to be trusted.

Are you getting 9.5oz per plant OR 9.5oz between both?

At the end if the day if you used a watt for watt swap. 600w LED will produce more light so you should increase yield by 1/3 providing everything else remains the same.

But you need to ask why you only get that 9.5oz, assuming that's total weight.

What's your grow style, straight up no training, Christmas tree style?
What's your veg time?
What's your plant health like?
What's your extraction (air exchange) like? Is it recirculating the same room, properly vented outdoor?
How old your bulb?

Are you doing something wrong is the general gist of what I'm saying.

All this is assuming your only pulling 9.5oz from a 600w hps , which is the impression I got from your first post.

9.5 oz's for the entire 4x4 tent, 2 plants. I grow in DWC so low veg times... I've had other strains get 75% better yields or around 1 lb.

 

[Meast21]

There is only the power draw.
Please ignore anything that says equivalent to.
Because there's hundreds that make claims like that and most are not to be trusted.

Are you getting 9.5oz per plant OR 9.5oz between both?

At the end if the day if you used a watt for watt swap. 600w LED will produce more light so you should increase yield by 1/3 providing everything else remains the same.

But you need to ask why you only get that 9.5oz, assuming that's total weight.

What's your grow style, straight up no training, Christmas tree style?
What's your veg time?
What's your plant health like?
What's your extraction (air exchange) like? Is it recirculating the same room, properly vented outdoor?
How old your bulb?

Are you doing something wrong is the general gist of what I'm saying.

All this is assuming your only pulling 9.5oz from a 600w hps , which is the impression I got from your first post.

Bulbs were older so I changed them out... Just a bad yielder, probably the worst yielding strain I've had in 8 years doing maybe 50 different strains.... I top and scrog.

 

[coreywebster]

Bulbs were older so I changed them out... Just a bad yielder, probably the worst yielding strain I've had in 8 years doing maybe 50 different strains.... I top and scrog.

It's just crazy to me that you could scrog any strain and get 9.5oz in that space.

I'll give you an example of when I changed to LED.

4x8 using 3x 600w hps , 4 plants per light at different stages of flower . 15 oz a crop.
So really working with less than ideal space , also I was using cooltubes which are renowned for terrible light spread.

Switched to 720w of Cobs and 560w of QBs , each covering 4x4 of my 8x4.
So this meant I divided my space in two and not 3 allowing more veg time per crop.
Harvest every 5 week, perpetual.

I'm telling you this so you understand its an unfair comparison.

First crop under the 90cri Cob was 32 oz.
Next crop under the quantum boards was 33oz.
Next crop under the 90cri Cob was 37oz, a personal best , I also had a few oz or rot that I'm not counting.
That continued for around 3 more crops before I had to move house.

So , yeah I yielded with the same strain a lot more under LED. But I also allowed more veg, put more effort into filling my space because I wasn't overwhelmed having g to crop every 3 weeks like before.
I'd say because I built my first light at great cost that pushed me to concentrate on maximising my space too.
Also this is with high yielding strains like blue cheese, blue dream ect.

Bottom line really is , LED will greatly improve both the amount of light and the light spread compared with a single ended 600w hps in a 4x4, which really isn't ideal.
For what they cost these days I'd highly recommend it.
My Cob cost like £700 to build. Just no need to spend that these days.

 

[Boatguy]

It's just crazy to me that you could scrog any strain and get 9.5oz in that space.

Considering i pulled just under 8 oz of tops in a 2x2.5 scrog with under 200w.. Yes it is crazy.
Not a dialed in grow, and just in soil.

 

[StareCase]

... It's just crazy to me that you could scrog any strain and get 9.5oz in that space ...

9.5 oz. from a 4 x 4 is pretty low.

... Considering i pulled just under 8 oz of tops in a 2x2.5 scrog with under 200w ...

That yield sounds more like it. The most recent grow from just a half-hearted manifold in the ole 2 x 4 yielded just under 15 oz. with around 390 COB watts.

There is a new SCROG in progress where all 8 square feet will be filled with tops. Really interested to see what they will yield this time.

 

[Boatguy]

9.5 oz. from a 4 x 4 is pretty low.

That yield sounds more like it. The most recent grow from just a half-hearted manifold in the ole 2 x 4 yielded just under 15 oz. with around 390 COB watts.

There is a new SCROG in progress where all 8 square feet will be filled with tops. Really interested to see what they will yield this time.

Im watching that one. Your last was pretty epic

 

[Antidote Man]

Some of you make things so complicated. The best thing about a good LED is it will come with little heat issues, allowing you to use merely a fan pointed at the driver to keep the space cool and not all that ducting/fans, etc. I would think under the right circumstances a 1000hps will yield better than a high-powered LED but not by much... I use an LED now and I'll never go back.

 

[Boatguy]

Some of you make things so complicated. The best thing about a good LED is it will come with little heat issues, allowing you to use merely a fan pointed at the driver to keep the space cool and not all that ducting/fans, etc. I would think under the right circumstances a 1000hps will yield better than a high-powered LED but not by much... I use an LED now and I'll never go back.

That is a common misconception. Led produces the same heat per watt..
600w of led or hps produces the same btu's

 

[Antidote Man]

That is a common misconception. Led produces the same heat per watt..
600w of led or hps produces the same btu's

I'm sorry but in my experience that isn't true. I have 2 LED boards in my closet and only the thin space around the folding doors as ventilation. I have a small space-heater/fan mounted at the light level to blow air across the tops of the LEDs and they stay very cool to the touch. I have grown with HPS in closets and there is no way I could use an HPS in that closet without ducting and cage fans to draw out the air/heat from the bulbs.