Grams/Watt Calculation

[amneziaHaze]

Root and plant mass have more of an effect on harvest weight than you suggest. Its not hard to place a low wattage led close to a long vegged plant get a good gram per watt number. In the end it is the same result as someone doing a short veg with a high wattage grow.
Energy consumption wise

i cant see how you can get more bud with low wattage and longer veg if you fill out the space. you are limited with your light. 60W cant make 300g no matter what. buds in a too large space become popcorn buds, and plant stretches

allsoo to place a low wattage lamp close to a long veg plant means you get a small area that has light.soo all that long veg is not getting light

 

[Boatguy]

i cant see how you can get more bud with low wattage and longer veg if you fill out the space. you are limited with your light. 60W cant make 300g no matter what. buds in a too large space become popcorn buds, and plant stretches

allsoo to place a low wattage lamp close to a long veg plant means you get a small area that has light.soo all that long veg is not getting light

Silly.. If i vegged and trained for 20 weeks, and then flowered my harvest would be huge. If i did limited veg with the same plant it would not produce the same under the same light. If you can prove otherwise, by all means go ahead..
I pre apologize if you can prove this

 

[Splinter7]

i cant see how you can get more bud with low wattage and longer veg if you fill out the space. you are limited with your light. 60W cant make 300g no matter what. buds in a too large space become popcorn buds, and plant stretches

allsoo to place a low wattage lamp close to a long veg plant means you get a small area that has light.soo all that long veg is not getting light

you can get some strange efficiencies with lower wattage than optimal for growing good buds with high yields. quality will obviously drop in a low wattage case, but total plant material could be higher per watt...not more grams per harvest though, just the efficiency of it improves relative to wattage. maybe it's best to think about how much light gets wasted in each case.

 

[amneziaHaze]

Silly.. If i vegged and trained for 20 weeks, and then flowered my harvest would be huge. If i did limited veg with the same plant it would not produce the same under the same light. If you can prove otherwise, by all means go ahead..
I pre apologize if you can prove this

soo you are saying you can make more with 20 weeks and 60W of light than with 4weeks of veg and same light?
i still beleve light is the main limiting factor for your grams per watt. yes having a perfect vpd will give you more but light power controls the max end result.

 

[sh0wtime]

G's per w is a pretty arbitrary way of measuring your grow...
Everyone leaves out veg time, pumps, fans, dehumidifiers, etc. Dont forget controlling the dry room either..

I did not leave out the veg time.
I use a Rowenta Fan whats that gotta do with my yield?

 

[King Avitas]

Pushed my last grow pretty hard ended up getting 1.77g/watt. Could have got that number up to around 2g/watt if I had trimmed and weighed my smalls. I had 8 plants growing scrog style, fed synthetic nutes and I run a sealed room with CO².

 

[sh0wtime]

Is that a spiderfarmer SF-2000 I see there?

Pushed my last grow pretty hard ended up getting 1.77g/watt. Could have got that number up to around 2g/watt if I had trimmed and weighed my smalls. I had 8 plants growing scrog style, fed synthetic nutes and I run a sealed room with CO².
View attachment 5244454

That a SF-2000 quantum board u have hanging there?
I'm using very similar one's from Sylstar.
Very neat grow room btw.

 

[King Avitas]

Is that a spiderfarmer SF-2000 I see there?


That a SF-2000 quantum board u have hanging there?
I'm using very similar one's from Sylstar.
Very neat grow room btw.

I have 3x SF4000 lights over a 8x4 grow area. That was 8 plants with lighting levels @ 1400μmol. The lights were at 90% power. My current grow is only 4 plants in living soil. In a 8x3 scrog set up. Currently running the lights are set at 1250μmol or 60% power. My weight will be less but my gr/watt should still be good because of 30% drop in power being used.

Current grow

 

[sh0wtime]

I have 3x SF4000 lights over a 8x4 grow area. That was 8 plants with lighting levels @ 1400μmol. The lights were at 90% power. My current grow is only 4 plants in living soil. In a 8x3 scrog set up. Currently running the lights are set at 1250μmol or 60% power. My weight will be less but my gr/watt should still be good because of 30% drop in power being used.

Current grow
View attachment 5244486View attachment 5244487

1400!? GOOD LORD at what distance? 24"?

 

[King Avitas]

1400!? GOOD LORD at what distance? 24"?

I sorta forget but I think it was about 30". But honestly there is no need to run that high even with CO². The 1250μmol I am currently running is probably the highest I'll ever go again. Btw 1250μmol is only at the tips of my tallest colas. Most of my canopy is in the 800-1100μmol range.

 

[sh0wtime]

I'm struggling to push over 1000, but I'm in week3, it's just the greed man.
I used to hang my lights at 30" when I got them first, just to be able to run full power.
Actually I'm pretty sure it was a waste of energy, but men feel good to run FULL POWAH, it is what it is.

 

[King Avitas]

1000 is lots especially if you aren't running CO². Anything over 1100 is a waste unless you are running CO² and even then everything else better be dialed in aswell. 500μmol is all that is required and 800μmol is lots without CO².

 

[sh0wtime]

Yeah I noticed, I just had to see it myself tho what the plants would take.
Maybe I'll go that high before the final stretch, for faster ripening.
But to push em like that for no reason, no bueno, ure right.

 

[Dr.Dave56]

I gave up counting. I have no idea what my last lot yielded. As long as it is a good smoke, gets me stoned and there is enough to last me I don't care.

There you go, Lmao.