I just weigh my harvest and start smoking it. If I were growing for patients, or profit, I would be all up in the calculations.
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Good write up, I particularly found the foot analogy amusing. This is why I dont really pay any creedance to comparing my grows to other peoples, just my own harvests between each other (in which @LemonadeJoeās algorithm would be useful) because like you said, there are so many variables its impossible to get any data out worth comparing, even different cuttings of the same plant will behave differently from each other. I have this dilemma with substituting branded nutes for other things, I have no idea if its actually working (providing the same benefits for a lower cost), but over multiple grows I know its at least not making anything worse
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Dried Grams at a specified RH minus stems, vs amount of watts pulled from the wall āfor everythingā calculated out to KWH over the entire grow, veg included. Is a pretty easy definable way to get comparable results.
Very few brag or talk about there wet weight, and dry weight is subjective unless your specifing a certain RH or using helpers like Boveda packs, cause where @anon32470837 say 26% and i say roughly 22% of wet weight for what dry bud will weigh, and that also varies depending if you watered or not just before harvest. So too many variables to argue wet weight when a specific defined dry RH would be more accurate.
But thats not bringing in over all resin production either, soooo how far down the rabbit hole do you want to goā¦
Traditional metrics best i had archived in the past was 1.86g/w dried, and that worked out to 1.56g/kwh
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Yeah, but are you using the 11" watt or the 13" watt or that new fangeled metrical watt thingy?
Sorry - couldnt resist 
I agree. There is no metric we can use to compare one persons grow to another persons grow.
First, you need to just forget lights/watts/fixtures unless, like you said, you want to track KWH to see what your costs are.
I personally dont care about electrical costs. My costs dont change significantly from one grow to the next. I always use the same lights, same fans, same tent, same pumps, same nutes, same timers, etc etc, on more or less the same schedule for every grow. There is some variation due to temps from summer to winter, and me playing with timers, nozzles, etc, but its not enough to worry about, and wont change my cost per gram much.
The only important metric for me is how many grams I can harvest per day of growing. Thats why I use gm/day now - but thats just what works for me. YMMV as they say 
But - you cant compare your gm/day to my gm/day unless you also include things like how many sq ft of space, and/or number of plants, at a minmum. Even then, its not really a valid comparison. Too many variables are left out.
Everyone growing these days already pretty much maxes out the light/watts they give their plants. Small variations in watts/sq ft wont make any significant difference in yields.
Things like root rot, poor temp control, pests, mold, PH, light leaks, good/bad training techniques, over or under watering, poor aeration, insufficient LITFA, etc etc etc all have far far greater effect on yields than lights do.
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right there is why i love mr.sparkle. gotta keep some perspective on that hole.
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Actually, due to the difficulty of accurately drying bud, most plant studies look at wet weights. Actually, they seperate and measure all plant parts separately. Stems, leaves, buds, and roots.
There are far too many variables to compare one grow to another in terms of efficiency. But from a math perspective, if all other variables remain the same, the only metric that matters is grams.
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Really the only thing that matters is were YOU happy with the results of your time and effort. Isnāt supposed to be a dick measuring contest is it? My last harvest was embarrassing to put it mildly. 1 lb of died flower under 1000hps. Almost cried but itās a lb more than I had and only cost a couple hundred in electric to produce. Made massive changes or will be when I get home to 812w of LED. Thatās what the math says anyway lol
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turely if going that route they remove āallā water in end yield calculations as you wouldnāt be able to get an accurate measure ever. but yeah ag commercial crops its about end yield, but even that like say corn for example is measured once it reaches a certain water percentage then is harvested and calculated and the same goes for any grain as if its too wet it spoils, tomatoes, peppers, or say watermelons though more water weight the better from a $$ per kg or ton bases.
@Daytripr69 and its always a D measuring contest lol you should know this, but it does only come down to yourself in the end.
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I think Iāll end up measuring it on a plant by plant scale and if I can be bothered a gram per cost seeing as money is time.
EDit: that is a bob gram to clarify which incidentally is exactly the same as a finger of whisky. Pm and Iāll send you my scales.
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I always measure the success of my grow based on the number of grams of full melt hash I can produce. Under standard conditions, I can measure the yield of the plant in grams under the 1000watt light I use. The irony was, of course, that the grams per watt measurement was used because of the standard conditions. lol then it becomes a dick measuring contest and a poisoned well! I mean, thatās some good humor right there. no, but seriously I had some good laughs here.
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For me I know that there are two main costs for each of my grows, power and nutrients. Regardless of strain I need to be profitable, so grams per watt matters (and also helps set pricing). Since Iām on a set schedule for veg and flower those are the only variables that I have to worry about.
I donāt use my grams per watt to compare against others, but I do use it to compare against my known baseline. From there I know if Iām on track or not.
I have even started calculating power usage of my washer, freeze dryer, and press so I know exactly how much per gram it cost me to produce my bubble hash and rosin. Using the two sets of variables I can quickly calculate how much each gram has to sell for in order to maintain margins. Once we get all 3 flower rooms online this will be less important, but until we have all of our returns calculated itās just a guessing game.
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Ohhhhhhh!!! Thats the best nerdy comeback burn Ive had in ages and ages!! I Love it!!
Or is it geek? I never can remember which is which. 
Ive decided to start a new trend. Im sure its going to take off like crazy.
Im going to use grams/horsepower.
So my 320 āwattā fixture is actually 0.429 horsepower.
I know this is going to be very popular because everyones numbers will go up like crazy. You just thought you were doing good with 1.5 gm/watt. Thats will turn into 1119 gm/HP! Wooo hooo!!! Talk about dick measuring
By the way, my watts are 100% real 'merican watts. None of those silly metrical fake-watt thingys @Mr.Sparkle is talking about! 
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LOL!! Absolutely. Gm/watt was invented for that sole purpose. It was so the top dogs could prove they were the top dogs, and all the rest of us could use it so we knew just exactly how small our dicks really were compared to the greats
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hey so back to psychogenic buds, it means the sensation you get from smoking it originates in your mind. Almost like the placebo effect. Orā¦exactly like the placebo effect. I meanā¦ like administering straight up thc to your body has an effect you canāt make up. The same canāt be said about the taste or smell right? Like the smell and tastes do something, but something different for everyone. Not like a good thc rip! Itās my favorite part. Reports areā¦you can hallucinate! You ever hallucinate off weed?
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Funny you bring this up, because earlier today I brought a strain to work that I havenāt tried yet. When I smoked it I felt the weed ābuzzā, but I also felt a ādrunkā kind of feelingā¦itās hard to describeā¦but, yeah, thereās that
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Thatās something Iāve never been told lol the thing about the so called greats with the giant D forget that even the guy with the micro penis still gets off lol.
Supposed to be fun hobby no need to put stress in it
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You ever thought about how the dude with the giant D must have problems on the regular cause they cant fit, even through doorways 
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I live it daily
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when Iām at a party I love it when I hear someone proclaim thc has no effect on them. Thatās when I say have a rip of this, and the next thing they are passed out. The craziest thing I ever saw, was this guy he drank some tincture I said the max Iād take was 3 tablespoons so he took 6. He was staggering and hallucinating then he puked all over. Ahh good times! He told me he thought he was going to die.
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