Has anyone here actually achieved 1 gram per watt?

[wonkanobe]

my friend in CO. Can get 3pounds off of a 4x4 table with 2 600 over it.

50 plants per 4x4 ebb and flow 4inc rockwool cubes.


Grows the ORIGINL MOWIE WOWIE. ends up 50 laarge colas.

 

[1969]

If people aren't getting at least 2lb per 1000w (those that are trying to that is), and not getting it something is wrong. I firmly believe that 3lb per 1kw is totally doable and hope to do it real soon. I got 2lbs per 1kw on my first ever grow a long ass time ago.

 

[ureapwhatusow]

bottom line the subject of grams per watt is subject to relativity

BUT the most important variable is genetics.

but genetics represent yield potential (i.e. you wont get gram per watt with the best strain in a shitty environment) and do not guarentee a gram per watt final output

In my state, which is decrim but does not have medical mj provisioning, the providers of "medical grade" marijuana mostly fit this category

they only grow strains that

produce 2 lbs per 1000 watts, 2.5 and your really dialed in (at least .89 - 1.12 grams per watt)

majority of grows are configured

bigger.fewer plants on soil or promix, clones from select mothers, 5 gal containers, 9 plants per 1000, 4-5 veg, 8-9 weeks flower, average of 4 harvests a year

 

[Americangrower]

I get 4 zips from each S99 lady... I grow in 5 gal buckets (soil) all organic...no co2

I grow 10 ladies under 2 600 watt sunmaster lights

4 x 28 = 112 x 10 = 1120 just under 1 gram

If I didn't grow organic I'm sure I could get 1 gram per watt.... but i'd rather have the great tasting buds instead ...

 

[Greyskull]

If people aren't getting at least 2lb per 1000w (those that are trying to that is), and not getting it something is wrong.

I am one of those people, and I agree. I just started my climb, and I am sure its within my grasp (without CO2). From what I have learned and experienced thus far its about maximizing you canopy & dialing in the environment...

I wonder what the view will be like from the 2elbow plateau? "Hey see that 3lb mountain - climb it!"

 

[TGT]

I have been growing for years and have only hit 2 and a half pounds per 1000 once. Usually I get 2 pounds per 1000 and I have everything dialed in perfectly. I use Promix and do not use Co2, so may be with warmer temperatures and Co2 I could pull off more. I do make my finished buds bone dry, and I know some just make them cut and burn and if I did that I would get 4 pounds per 1000 no problem.

TGT

 

[Luckygreenhand]

my friend in CO. Can get 3pounds off of a 4x4 table with 2 600 over it.

50 plants per 4x4 ebb and flow 4inc rockwool cubes.


Grows the ORIGINL MOWIE WOWIE. ends up 50 laarge colas.

Sounds really good, Im in co too, and i know we got some ideal climates and its dry here too! Lots of good stuff around and local growers, that sounds easily doable, yes i said doable. LOL best of luck to everyone, I want 50 LAAAAAARGE COLAS!!!!

 

[Cozy Amnesia]

Thanks to all for sharing.

Gram per watt is simply a unit used to compare yield and using light output as a common denominate. A lot of people are saying that you have to factor in time, but I'm not interested in that I'm interested in maximizing yield. If I veg crop A in a veg chamber while crop B flowers in the flower room/chamber, then I have up to 2 months before I can harvest A and put B into the flower room. It's a logical theorem. So saying that you only vegged for 1 week doesn't really matter if you can't put them in flower for two whole months.

I guess this only applies to those who are doing perpetual though.

 

[barletta]

If I stay 'on top' of my lil perpetual, I don't have a problem pulling ~100g +/- weekly. 3 x 400w = 1200 10wk avg flower times = .83gpw (10 wk cycle). I'm sure that 1g/watt is relatively easy if that is your goal. If I grew just 8 wk strains, and got equal yield (would have to veg at least another wk under 120w of flouro's), I'd be @ 1.0 (for a 10 wk cycle).

I don't have the time to trim/clone/re-pot every wk, so I have been going on 2wk cycles (decreasing the efficiency some). I also grow quite a few seedplants (lil less efficient). I'm pretty sure that if I was 'looking' for a GPW #, a perpetual that was stocked every ~wk would be the most efficient way to get there.

 

[TGT]

Cosy Amnesia, that is exactly what I do so really time factored in is not important to me either. I get a crop every 8 weeks regardless. Actually, I have 2 going right now so I get a crop per month. I like growing this way best - it removes the veg factor and speeds things up a whole lot. Luckily I have a grow location that does all the veg, then I move the plants to the bud locations. This way it keeps hydro down.

TGT

 

[yamaha_1fan]

Thanks to all for sharing.

Gram per watt is simply a unit used to compare yield and using light output as a common denominate. A lot of people are saying that you have to factor in time, but I'm not interested in that I'm interested in maximizing yield. If I veg crop A in a veg chamber while crop B flowers in the flower room/chamber, then I have up to 2 months before I can harvest A and put B into the flower room. It's a logical theorem. So saying that you only vegged for 1 week doesn't really matter if you can't put them in flower for two whole months.

I guess this only applies to those who are doing perpetual though.

Time does play a role depending on what you are trying to accomplish. If I told you I got.65GPW and you told me you got 1GPW would you think your grow was better? You veg for 2 months, I veg for two weeks. Now how do we decide which is the most effiecient grow? What if you could veg for 1 week and use your veg chamber for flowering?

What if I grower A runs an 8 week strain and grower B runs a 12 week strain?


I posted about this a long time. GPW is not an effective method of comparing one growers harvest to another growers harvest as it doesnt account for time in flower or veg or TOTAL energy used.

GPW is simply saying, hey I yielded X amount using X amount of lighting.

Certainly in YOUR own environment, GPW can be used to compare previous harvests to current harvests

 

[TGT]

If you want a number to mean anything, I think the best method would be grams per watt divided by the number of months. So if I get 1 gram per watt, I would divide that by 2 because it takes me 2 months to accomplish the final yield including veg and bud. So my Gram/Watt/Time would be .5 gwt. The reason I finish veg and bud in 2 months is because I use a perpetual set up. If I didn't use a perpetual set up then it would take me three months to accomplish the same thing, 4 weeks for veg and 8 weeks for bud. Then my G/W/T would drop to .33 gwt.

You could add in a whole lot of variables as there are many, but it would just complicate matters and make the number useless. I find the simple way usually is best.

TGT

 

[Greyskull]

If you want a number to mean anything, I think the best method would be grams per watt divided by the number of months. So if I get 1 gram per watt, I would divide that by 2 because it takes me 2 months to accomplish the final yield including veg and bud. So my Gram/Watt/Time would be .5 gwt. The reason I finish veg and bud in 2 months is because I use a perpetual set up. If I didn't use a perpetual set up then it would take me three months to accomplish the same thing, 4 weeks for veg and 8 weeks for bud. Then my G/W/T would drop to .33 gwt.

You could add in a whole lot of variables as there are many, but it would just complicate matters and make the number useless. I find the simple way usually is best.

TGT

thats a good way to think of calculating productivity.

 

[blackone]

Yeah g/W/month is the way Cervantes likes to judge productivity.
I like g/KWh more - counting both veg and flower watts, as has already been mentioned in the thread. This way the longer flowering strains measure slightly better than when just counting g/W/Month flower watts, because they stretch more and you don't have to veg them as much.
Ventilation, AC, pumps etc. also should be counted in but of course there is a problem with this when trying to compare I.E. the skills of an Alaskan grower to a Texan grower... Given the same yield the Texan will technically have a lower productivity because he has to use shitloads of watts on AC. Doesn't mean his skills are worse though On the other side it does make sense for comparing other things - perhaps that cooltube might be a bad reflector (No idea - just an example) but if you only lose a little yield while saving a lot of energy for the AC then the productivity might actually be better. Also the aero grower pulling really nice yields might not look quite as efficient if the electricity used for his pump is added to the equation...

 

[Crackerass]

the best ive had was 532g's with a 600watt. using dwc with 2 plants per bucket 14 plants total. used a strain called freeze land which is awesome if you havent heard of it. i used clones and grew in a closet that was 2 buckets wide. vegged for 3 weeks no co2 and flowered for 60 days.

 

[TGT]

I wouldn't bother adding in the watts of pumps, AC, fans ect. into the equation to fing gwt. I think just using the watts of light is good enough. Pretty much every garden has to be in the same basic range to produce well and adding all that other stuff would just complicate things and make the number meaningless. Just my opinion.

TGT

 

[NorCalHal]

Imo, it has alot to do with the strain u run, and how long u have ran that strain. It's a matter of getting to know that strain.
I think it is alot eaiser to get that gpw out of smaller ops rather then larger ones also.

 

[bambam]

Hope this thread keeps it up. Good info for me as i just started the use of a 1000hps. I have run the 600 and would get 150z to 13oz. I know i could do much better but these were my first 4 grows ever of any kind. I feel i know more now days and will be able to hit the the mark soon enough. I may have to change up my system a bit. Good luck to all those trying to hit the 1gpw. As i may need a bit of luck myself to do it.

 

[Suby]

BB 420grams under a 600W is a VERY respectable yield even if you are a seasoned grower.
Every little detail counts, I find environment get overlooked all the time and I`m not talking about CO2.
Proper air circulation and day/night temps are also a huge factor as is humidity.
Humidity will determine stretch during veg, higher RH leads to thicker fatter leaves and shorter internodal distances.
This means you`ll have a main cola that is less sparse and where more of those nodes are near the lights sweep spot.
Setting a plant properly during veg will lead to a plant with a better flowering potential.
I`ve had alot of people tell me you`ll get abetter yield with a hydro setup and to a certain extent I think they are right.
I come very close to the yield I would get in my bubblers using an organic soil recipe.
What I lose in yield I make up for in savings of time (no ph checking, no meter, no water purifying, no expensive nutes, no res changes, etc.).
Hydro makes sense for larger scale ops of at least 600W, I actually find larger ops to be better suited to get 1gpw.
There is overlapping in light when a few 1k lights hang together plus you can mix MH with HPS.
Environmental controls also become easier to implement and worth the investment like CO2 and nutrients.
Strain is key as alot of peeps have mentioned but each grow style is going to favor which strain you want.
Sativas in 150 W micro grow are useless, growing a haze variety in an IKEA cab is not a good start.
Sativas under a few K`s can yield huge even if they take 90days+.
Closet growers like myself will favor SOG or SCROG`s using indica/sativa mixes or pure Indicas, so far Bubblegum from SS was my best yielder in a small space.

BOG (bless you wherever you are) turned me on to the timing behind growing, that transplanting and feeding the right thing at the right time made all the difference.
Soil growers should make sure they use the best quality soil mix they can make/buy.
Hydro growers and soil growers have to make sure they use the very best water source they can find, 300ppm tap water isn`t going to make the most of those high quality hydro nutrients, it need to be RO and the right ph.
Guys like BigToke can help alot of growers in these areas, check out his threads.

Peace

 

[00420]

Only with this system.... Flat garden my best was .75