Or 4.20 grams a day but that probably wrong to!
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It's basic math! How do 17 grams a day for 63 days equal 686?He argues to argue. LOL
Has a problem admitting he is wrong. But that's cool. That is what our world is made of.
So see if I have this correct. I am running two 315W CMH's, so that is 630W. That is 0.63 of 1000.
So my formula would read, Yield / 0.63 / Days = G/day.
686/0.63/63 = 17.3 gram/day.
Is this correct?
GR
The problem you're having with the math is that it doesn't work with fractions of a light. If you divide by .63 you get a bigger number than if you divided by >=1. You would have to multiply it there to get a smaller number.
686*0.63/63 = 6.86 G/L/D.
I read an interesting article by Ben Burkhardt, who once owned the largest indoor grow facility in the country. He found that there was no simple metric for yield analysis which took into account not only the power used by lights but also the length of flowering time. Often yield is stated as grams per watt, but that doesn't take into account the difference between a plant that finishes in 45 day versus a plant that takes 90 days. He put forth a metric that takes both into account and works for the closet grower as well as a huge commercial grower, and returns a number that can be compared across any grow type.
The equation is as follows: Yield in grams ÷ number of 1000W lights ÷ days in flower = GPD average.
As an example, my three plants were under 1600W of leds and took an average of 90 days, and yielded 3000 grams of dry flowers.
3000g ÷ 1.6 ÷ 90days = 20.8 grams per day.
Here's a link if anyone would like to see the source material.
Grams Per Day by Ben Burkhardt.
@Marzbadrock
I believe it is call Extrapolation!
Example
20.8 is to 1000 W = X is to 1600 W. Just cross multiply and divide.
So 20.8 x 1600 = 1000 X so,
20.8 x 1600 equals 33,280 divided by 1000
So, X = 33.28
Not a math teacher so I hope this made sense.
Exactly what I just posted above weasels post
Yes I was in a sense. He posted he got 20.8 grams per day
He got 33.3
I was just clarifying that was 20.8 per 1000w
I know he states he used 1000w.
I'm saying if you his example with a smaller light it doubles his harvest weight.
I see what your saying.
But say he used 400W, 400 divided by 1000 equals 0.4, so the formula becomes.
1000 / 0.4 / 70 equals 5.71GPL