is it ture 1 watt= 1 gram

[jaye13]

i ve been told it works out watt 600 = 600 grams

[Racefan]

Originally Posted by jaye13

i ve been told it works out watt 600 = 600 grams

That is the bench mark growers strive to reach. not what every grower will get. and that bench mark is 1 gram per watt per 30days.

[Weedpipe]

+rep for ur good question

[Hightide805]

yeah, i've read that too, so its not really a bad question... thanks for the clarification racefan

[DownOver]

To get that return though, doesnt it depend on the strain that you are growing?

[Hightide805]

Originally Posted by DGMGH

To get that return though, doesnt it depend on the strain that you are growing?

yea, not all strains say they can produce that much

[Racefan]

Originally Posted by DGMGH

To get that return though, doesnt it depend on the strain that you are growing?

Very few get that return. Most are considered decent growers if they get half that (1/2 watt per gram per 30 days). Only the perfect set ups with the perfect strains get the perfect big yields. I myself used to get hung up on all that benchmark hype and it darn near drove me crazy. i kept trying to improve here and there and bought tons of equipment and additives. then I realized that all a long I'd been growing more than I could use and didn't need to improve in that area so i concentrated on flavors and potency rather than yield and think it was the best move ever.

[PitViper]

Originally Posted by Racefan

That is the bench mark growers strive to reach. not what every grower will get. and that bench mark is 1 gram per watt per 30days.

Thanx Racefan...I thought I was doing well but not by that info...30 days...wow. Im not even going to try to go there. I might be able to get some here and there but not much more.

[Weed420]

1 gram per 1 watt is doable for one fower cycle. 1 gram per 1 watt per 30 days would mean aproximately 6 ounces per plant. Doable but your getting into the real expert category. With all the right equipment and strains and knowledge.

[obxgardener]

Originally Posted by PitViper

Thanx Racefan...I thought I was doing well but not by that info...30 days...wow. Im not even going to try to go there. I might be able to get some here and there but not much more.

Is that starting with clones that have already been vegged? That would be a big head start over counting an entire grow from seed. I guess I don't understand how the 30days is measured.

[outdo0rmaster]

Originally Posted by jaye13

i ve been told it works out watt 600 = 600 grams

Can you focus at question not vegetation, nutrients and other ?

Let pass this 3 examples.
-Skilled grower
-Used 600W bulb
-Chem fertilizer
-Hydroponic,Mapito
-Same vegetation
-Same strain

Situation #1
Room 1m2/9ft2.Distance from top of plant and bulb is 1m/3ft.
Growth 16 plants.Perfect room conditions.

Situation #2
Room 1m2/9ft2.Distance from top of plant and bulb is 60cm/2ft.
Growth 16 plants.Perfect room conditions.

Situation #3
Room 1m2/9ft2.Distance from top of plant and bulb is 30cm/1ft.
Growth 16 plants.Perfect room conditions.

Result from Situation #1 > 150grams.
Result from Situation #2 > 400grams
Result from Situation #3 > 650grams

How this come ? (Watt - Lumen)
Very simple,Watt is not unit of light measurement.Watt is measurement unit for power conversion or simple for spended energy.Take a look at your Fridge and you will find to he spending 400W.He don't transmit light,he use energy for something else,right ?

Now,bulb use electric energy to produce light.Measurement unit for light is Lumen.Hence plants need light (Lumens) with specific color (nm) for photosynthesis (food making) you can not say Watt cause that is totally wrong.

Calculating yield who directly depends of issued Lumens but say Watt are not correct.

Lumen on distance (Sun - HPS)
Like you see 3 examples have all same characteristics except one.Distance.
To can give you better view at this, I will use example of Sun and HPS.

SUN,release really big amount of Lumens but cause distance we got only 5 000 Lumens per 1ft2 or about 50 000 Lumens per 1m2 what falling on the ground.
We just trying to replace sun with hps but sun give 50 000 Lumens on 2m/6ft above ground and 50 000 Lumens on the ground.Absolutely no difference.
Will not go deeper where is more lumens,on the equator or somewhere at north ... that is another story.

HPS,can not beat sun but HPS losing lumens at distance like SUN.
Big difference is cause sun transport really big amount of lumens on large distance and 2m/6ft doesn't mean nothing.For HPS 2m/6ft is very very big distance so hps will lose lumens much more than you think.
Will not go deeper in story where Philips say to his bulbs losing 10% of initial lumens in first 10 days.So 600W with 90 000 lumens after just 10 days will be 600W with 81 000 of initial lumens.

After all this its normal to plants do not receive same amount of lumens cause distance even if is light source absolutely same, 600W.
Hence that, yield from situation #1,#2 and #3 can not be same.

I push my friend to made this video, so please take a look.
Also, 600W bulb can give you between 600 and 750 grams.
This guy is not pro he is master ... just indo0rmaster

YouTube - Light on 1 and 2 ft

No its not truth of course.
hope I did answer you

[outdo0rmaster]

:) its logical ...is it ? ...
In another case if bulb dont lose lumens on distance (light intensity) I will turn on one bulb here but my friend will grow his plant on that light in another town ...

[TorturedSoul]

Originally Posted by Racefan

Very few get that return. Most are considered decent growers if they get half that (1/2 watt per gram per 30 days). Only the perfect set ups with the perfect strains get the perfect big yields. I myself used to get hung up on all that benchmark hype and it darn near drove me crazy. i kept trying to improve here and there and bought tons of equipment and additives. then I realized that all a long I'd been growing more than I could use and didn't need to improve in that area so i concentrated on flavors and potency rather than yield and think it was the best move ever.

1/2 watt per gram? Err... Did you mean 1/2 gram per watt? There's a big difference lol. If I got two grams per watt (1/2 watt per gram) consistently, I'd have been pretty happy indeed.

Assuming that you meant 1/2 gram per watt:

Since one month is only half of an eight-week flower cycle, in affect that IS one watt per gram, isn't it? I mean, (it seems to me) that you're talking about harvesting half the room and getting 1/2 gram per watt? Or are you growing some alien strain with a 30-day flowering cycle (in which case your yield would be valid - by itself - for this discusion).

Originally Posted by Weed420

1 gram per 1 watt is doable for one fower cycle. 1 gram per 1 watt per 30 days would mean aproximately 6 ounces per plant.

That really doesn't enter into it at all. What if the person is growing SoG with nine - or more - plants per square foot? They're not going to get anywhere near six ounces per plant - but they may well net a gram per watt amount. And then there's the people who grow ONE plant in a ScroG setup and allow it to fill their GR. Again, they might well harvest more than one gram per watt.

Which causes me to ask: Unless someone is only growing one crop per year or whatever, doesn't the amount of time it takes to produce a given amount of MJ have to enter into it?

How about "grams per watt per year?" That person with ultra-dense plantings will have more harvests (IF a single-room setup is used to both vegetate and flower - hey, there's another factor that must be taken into consideration!) per year than the person who vegetates one plant so as to be able to fill an 8 to 12 square foot screen (again, using only one room/cabinet for the entire plant's life).

One really must take into account one's setup, growing conditions, and other factors to make something like "grams per watt" a useful benchmark.

Some vehicles are very fuel-efficient (you could say they have a high "grams per watt" number lol) BUT they have like a nine-gallon fuel tank. My truck gets 19mpg - at best - on the highway. But I can fit a lot more fuel in it's tank. And then I can fill the second tank.

Guess which vehicle I'd take if I had to drive across a large lonely desert?

To further ramble... Suppose I had to take 2000 pounds of equipment on that journey? My truck is going to drop a couple miles per gallon. That uber-efficient car might drop by half. And if I had to pull a trailer... That car just fell completely out of the race.

But that's ok - I can stop, dig out the chain, and tow the car the rest of the way across the desert to the next fuel stop lol. It won't make that much difference to the truck.

I'm just trying to state that fixating on something like "grams per watt" without looking at the big picture is absolutely useless.

Unless someone is going to just grow one crop... ever.

Maybe "grams per watt per year per dollar of (ALL) equipment plus dollar of electricity plus wear and tear on ALL related equipment (including lights, pumps, fans, filters, the air conditioning and/or heating, dehumidifiers, etc.)" would be a more realistic comparison?

Originally Posted by outdo0rmaster

How this come ? (Watt - Lumen)
Very simple,Watt is not unit of light measurement.Watt is measurement unit for power conversion or simple for spended energy.

Now,bulb use electric energy to produce light.Measurement unit for light is Lumen.Hence plants need light (Lumens) with specific color (nm) for photosynthesis (food making) you can not say Watt cause that is totally wrong.

Calculating yield who directly depends of issued Lumens but say Watt are not correct.

HPS,can not beat sun

You have some fine points. Different lights have different efficiency levels. In addition to that statement, I would guess that people don't use the actual amount of watts consumed by the light but rather the rating of its bulb. And again, there are all the other things involved that consume "watts" such as whatever it takes to remove the additional heat produced by a large light - or a bunch of relatively inneficient ones (such as florescents - sure a 23-watt CFL doesn't put out much heat, but stick enough into a box to equal the illumination cast by your 600-watt HPS and you could bake a turkey on top - something people seem to forget).

Although I don't know about the "HPS,can not beat sun" part; they make HPS lights up to, what, 4000 watts? Stick one of them into the average GR setup and it would produce so much illumination that it'd literally bleach the plants (actually, a 1500-watt one would probably do that).

[outdo0rmaster]

Im not about 0,5gr on 30days or 1gr on 60 days if is haze its 90 days what means 1,5gr per 90 days etc etc ...
That is not interesting and its failed already.



I see your point and can agree hypothetical but not practical what again will bring us to human cant beat nature - HPS vs SUN.

First not sure I got you in 23W CFL and 600W HPS but nvm.

4000HPS vs SUN
Must agree, impressive lumens for room of 1m2 even for room of 4m2.
Hypothetically you will got amazing yield but in practice you are failed with all above 120 000 lumens per m2.

Here is why.
First controlling 4Kw in 1m2 is hell job but possible.That possible will cost so much to 4Kw per 1m2 will be disappointing very fast and better to buy on the street,purpose of home cultivation should be Not buying on the street.
I can go deeper in this about electricity cost,in-out fan cost,ventilator etc but I guess you can see my point already.

Now one much much important view.
4Kw is about 500 000 lumens,very impressive.
But how much 4Kw is good in matter of fact 4Kw per 1m2 will made more problems than goods.Not cause so much money and controlling it but cause plant body structure.

At 4Kw plant will grow much faster cause impressive lumens but veg her 15 days at 4Kw is hell plant.Outside plants grows from 3-7cm per day (1in-3in) on just 50 000 lumens, how much they will gor at 10x more 500 000 lumens.
Very fast ofc.
But unfortunately there will be problem with bottom part of plant who will receive pure ZERO of that impressive 500 000 lumens.Of course, without light ,what is must for photosynthesis, is no buds.So what is purpose of 500 000 lumens when you cant use all amount of lumens ?This is reason why is above 120 000 lumens per m2 useless even if sounds WOW...its simple useless.

Now take a look.HPS is fixed light source ,so parts above have light but bottom branches is failed/in dark.SUN is not fixed light source and plant have light from all sides.This means more yield,what is purpose of cultivation.

About 1500W, its failed to.Think about it ...

OK, I take this very rough cause no need to go deeper ,so reasons why I do not going deeper is already obvious at explanation in text above.

Hope this is satisfactorily answer.


OM

[obxgardener]

Yeah, you're not going to get 21 grams from a 42 watt CFL... it's too inefficient.

You'd have to have a very efficient set up to acheive the 1gram per watt yield.

It's certainly doable with a 600 HPS on a mover and a hydro set up - 600 grams or six 4 oz plants.

Take a look at PitVipers grow...