Highest gram per watt known?

Helmut79

Helmut79

Well-Known Member
The biggest mistake was that I forgot to count in my superlumens. It's a digital ballast that could be dimmed to 1150w, but I took it as 1000w.

The first half of the flowering was happening under 1000w and other half was under 1150w, so I took an average of 1075w per lamp and got exactly 1.60g per watt. This was weighted when they were curing at average 58%, so quite well dried, but not the most.

Big question to the forum - how many grams per watt is possible? What is the best result you are aware of? Who has it?

I've been lately wondering about how many things I could have done better and how much more yield could I have gotten by fine tuning the system so to say.

Just by feeling how much can be done better, I'm dreaming about 2g per watt myself.

Is it even to your understanding?
 
Helmut79

Helmut79

Well-Known Member
Fuck.. the first post got half of the text missing. I'll quickly try to re-type.

Missing first part:
I have lately claimed that I got 1.7g per watt, but it's not true. I got to admit I got the number by juding a small portion of wet weight. Even though I was quite sure what to expect as dry mass, the biggest mistake I made was that I didn't count in the superlumens or extra wattage.
 
NanoGadget

NanoGadget

Well-Known Member
I got damn close to 1 gpw with a blurple once. I was pretty proud of myself. Never gone much over 1.4 with my hps. Best I've ever personally witnessed with my own eyes was right around 2 gpw.
 
whitebb2727

whitebb2727

Well-Known Member
Helmut79 said:
The biggest mistake was that I forgot to count in my superlumens. It's a digital ballast that could be dimmed to 1150w, but I took it as 1000w.

The first half of the flowering was happening under 1000w and other half was under 1150w, so I took an average of 1075w per lamp and got exactly 1.60g per watt. This was weighted when they were curing at average 58%, so quite well dried, but not the most.

Big question to the forum - how many grams per watt is possible? What is the best result you are aware of? Who has it?

I've been lately wondering about how many things I could have done better and how much more yield could I have gotten by fine tuning the system so to say.

Just by feeling how much can be done better, I'm dreaming about 2g per watt myself.

Is it even to your understanding?
Click to expand...
Gram per watt doesn't matter. It means nothing. If two people use the same light and one vegges for 6 months and the other just 3 they will have different weights at the end.

You need to figure how many kilowatt hours went into that gram per watts.
 
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NanoGadget

NanoGadget

Well-Known Member
whitebb2727 said:
Gram per watt doesn't matter. It means nothing. If two people use the same light and one vegges for 6 months and the other just 3 they will have different weights at the end.

You need to figure how many kilowatt hours went into that gram per watts.
Click to expand...
This is totally true and I had never really thought of that before. Of course it only scales up so far. Veg for too long and you end up with a plant that is bigger than your light/s can adequately flower. So while I'd argue there probably is an upward limit to what you can produce under a given amount of light, veg time must be accounted for if we are to compare.
 
ANC

ANC

Well-Known Member
whitebb2727 said:
Gram per watt doesn't matter. It means nothing. If two people use the same light and one vegges for 6 months and the other just 3 they will have different weights at the end.

You need to figure how many kilowatt hours went into that gram per watts.
Click to expand...
I'd like to see something like gram/Watt divided by the total number of weeks from clone or seed, multiplied by 100.

SO if you got 1g/w in 1 week the score is 100.
1g/10 weeks = 10
1g/12 weeks = 8.33
0.5g/12 weeks =4.17
0.5g/15 weeks =3.33
2g/20weeks = 10

This gives us a relatable quantum for both time and energy efficiency.
Anything approaching ten is next level growing.
 
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Helmut79

Helmut79

Well-Known Member
whitebb2727 said:
Gram per watt doesn't matter. It means nothing. If two people use the same light and one vegges for 6 months and the other just 3 they will have different weights at the end.

You need to figure how many kilowatt hours went into that gram per watts.
Click to expand...
True. I vegged for 1 month without co2, but I think the same vegging results could be shortened to 3 weeks with co2 and few other corrections.

Gram per watt isn't an accurate way to measure, but I think it's not accurate to say it doesn't mean anything either.

I agree, productivity should be measured by:
a) kilowatt hours per gram
b) or grams per watt annually/or per day
 
Helmut79

Helmut79

Well-Known Member
nxsov180db said:
So what was the total dry weight? Good growers using 1000DE's can pull 3lbs+ per light. I've never heard of 4lbs per light but if you were able to pull 2gr/w you would have nearly 4.5lbs. I don't think you can reach 2gr/w unless you go vertical and you have the right strain, I don't even know of anyone that has reached 2+gr/w besides heath, and even then we're just going off of his word, not calling him a liar, but we don't actually have proof.
Click to expand...
It was 3.56lb per light taking into account the total wattage of 1000w and 1150w - average of 1075w per light - this is 1.60g per watt :)
 
Dr. Who

Dr. Who

Well-Known Member
I hate this - stupid GPW thing!

It's a measure of nothing!

You want to know how to blow the roof off of GPW?

SOG!

You better be able to do high # plant counts!

I'll give you a cpl of examples.

Both of these were run with Greenthumbs G13

5x5 tent with 64 plants in Plant Warrior #1 pots. (this is basically a 4x4 space of plants)
600w HID lighting
32 g average. per plant at harvest.
3.413 GPW!

One big mass of buds - Hydro method
2X2 Ebb table with 4" Rockwool cubes as the media.
250w HID lighting
Same 32 g harvest average.
3.968 GPW!

The Ebb table took a cpl of tries to get there per strain dial in.

The whole Idea of GPW being a measure of anything but personal satisfaction. Is stupid!

Could this be geared up to serious levels of production?

Sure thing! In fact, it's been done in Canada. Ever hear of that underground grow up in the mountains of BC?
What was it? 20 shipping containers (or maybe they were train cars) buried and run by an above ground generator? Fuel was trucked in.

That whole thing was SOG in soil, in table's (raised bed growing). Automated system too.

Story goes that the Canadian law enforcement knew of it and turned their backs on it. Till the US DEA bitched up a storm and they went in and pulled the plants. Took out the lights, cut the lines but, left the whole thing there other then the lights.... Generator, left over fuel, all of it but the lights and the lines (feed and electrical) being cut.
It's still there as far as I know.......I bet the RCMP keeps an eye on it though..

No one was ever charged for it either! If you went up and grabbed the remaining equipment. Bet you would be charged.....

It was in a documentary too (after the raid). If I remember right.....Anybody remember the name of that film?
 
ANC

ANC

Well-Known Member
Are you controlling all parameters, humidity, temp, CO2 and lights perfectly?
Are you creating plants with good roots that can feed properly without burning easily?
If your answer to all these questions is yes, then you should be approaching the maximum for the pheno you are running.
If you have these dialed in, the biggest factor determining yield is light. X amount of molls = x amount of grams of dried product (as long as you fill the whole footprint of the light with canopy 2 feet deep, you are maxing it)

How long did you flower for?
 
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