Rules of thumb?

legal_seagull

legal_seagull

Member
I'm new to RIU and have done a bit of digging but have yet to really come across a thread that lists some basic 'rules of thumb' for growing.. most seem to be categorized for the newb or seasoned grower.
I just want to know some of the basics and have as many together in one thread as possible

Things like;
-recommended lighting per sqft (watts,PAR,lumens) for HID and led
-recommended cfm for a specific area
-recommended number of plants/sqft

Maybe these questions are too broad with too many variables at play.. I realize that, just curious for some basic rules to follow

Thanks
 
coreywebster

coreywebster

Well-Known Member
Those bits of info are very easy to find except for plants per square foot because that's like "how long is a piece of string"

You can run from 4 plants per square foot ( Sea Of Green.. SOG) to 1 plant in a 2mx2m space (Screen of green.. Scrog)
and any where in between. Comes down to veg time vs comfortable or legal plant count. For me there is no legal plant count, because I'm not in a legal country so my comfort zone is 1 plant per 4 square foot.
 
chemphlegm

chemphlegm

Well-Known Member
legal_seagull said:
I'm new to RIU and have done a bit of digging but have yet to really come across a thread that lists some basic 'rules of thumb' for growing.. most seem to be categorized for the newb or seasoned grower.
I just want to know some of the basics and have as many together in one thread as possible

Things like;
-recommended lighting per sqft (watts,PAR,lumens) for HID and led
-recommended cfm for a specific area
-recommended number of plants/sqft

Maybe these questions are too broad with too many variables at play.. I realize that, just curious for some basic rules to follow

Thanks
Click to expand...
stop fussing over lighting, start buying a dehuey, ac unit, c02 monitoring, more air flow, reliable heat source, odor controls.
then if you want to make the most of your lights surround them with plants
if you want to make the most of your plants surround them with lights.
my garden succeeded when I read my first grow bible for 20 bucks, I rec doing the same
 
legal_seagull

legal_seagull

Member
I appreciate all the replies.. I've read books etc
Maybe i'm wrong to think this way but.. the whole, 'haven't you heard of google' mentality is old
Obviously there's material out there I can pick through and then try and fail, try and fail, learn here and there
Ppl have been doin this a longggg time, I'm trying to avoid learning as I go and rather learn before I make the mistake
I thought this was a forum where u ask specific questions to get specific answers lol Isn't that the whole concept of these forums, so I don't have to do all that. I'm not trying to skip the learning phase but I want real world opinions from people I can have a conversation with. Telling me to do it on my own defeats the purpose imo
I'm not looking for exact numbers to follow step by step, with the variable of strain selection alone its too hard to say, I just want some ppls opinions of what they have found works for them

ex Hey legal-seagull, you must have already looked for the answers and couldn't find consistent/reliable results so let me tell you what works for me.

I run a 3x3x6 tent with 2 600w HID, this gives me about 133watt/sqft and at just under 20000 lumens/sqft. When I start to go below these specs I can notice buds produce less and are airier. Bcuz I use two 600w I run a decent cfm of 54ft3/3mins as an average=18cfm but add 20-25% for additional heat factors. I use an average of '4 plants per sq/ft' Thanks (coreywebster).

-Oh thanks a lot man, appreciate your personal experience, you just saved me a bunch of time having to look it all up in individual threads and books, its almost like these forums help save ppl time money and hassle, who'da thunk that?
 
SPLFreak808

SPLFreak808

Well-Known Member
legal_seagull said:
I appreciate all the replies.. I've read books etc
Maybe i'm wrong to think this way but.. the whole, 'haven't you heard of google' mentality is old
Obviously there's material out there I can pick through and then try and fail, try and fail, learn here and there
Ppl have been doin this a longggg time, I'm trying to avoid learning as I go and rather learn before I make the mistake
I thought this was a forum where u ask specific questions to get specific answers lol Isn't that the whole concept of these forums, so I don't have to do all that. I'm not trying to skip the learning phase but I want real world opinions from people I can have a conversation with. Telling me to do it on my own defeats the purpose imo
I'm not looking for exact numbers to follow step by step, with the variable of strain selection alone its too hard to say, I just want some ppls opinions of what they have found works for them

ex Hey legal-seagull, you must have already looked for the answers and couldn't find consistent/reliable results so let me tell you what works for me.

I run a 3x3x6 tent with 2 600w HID, this gives me about 133watt/sqft and at just under 20000 lumens/sqft. When I start to go below these specs I can notice buds produce less and are airier. Bcuz I use two 600w I run a decent cfm of 54ft3/3mins as an average=18cfm but add 20-25% for additional heat factors. I use an average of '4 plants per sq/ft' Thanks (coreywebster).

-Oh thanks a lot man, appreciate your personal experience, you just saved me a bunch of time having to look it all up in individual threads and books, its almost like these forums help save ppl time money and hassle, who'da thunk that?
Click to expand...
That is way too much light, have you actually done this or were you just speaking a plan?
 
legal_seagull

legal_seagull

Member
SPLFreak808 said:
That is way too much light, have you actually done this or were you just speaking a plan?
Click to expand...
I came across a post in another forum stating he had something like that. Said it was his best setup, as far as bud structure and yield I believe. Somebody mentioned bleaching but he said he never had it happen, what makes you say 'too' much, just wasted light/power?
Not saying its a good set up, just a rough example
 
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SPLFreak808

SPLFreak808

Well-Known Member
legal_seagull said:
I came across a post in another forum stating he had something like that. Said it was his best setup, as far as bud structure and yield I believe. Somebody mentioned bleaching but he said he never had it happen, what makes you say 'too' much, just wasted light/power?
Dont quote me on what I wrote
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In a 3x3 he should be pulling atleast close to a pound with a 600.

i know that 2lbs wont fit in a 3x3 so the added 600 makes no sense to me? Along with the fact that after a point too much light/heat will negatively affect photosynthesis. The second chart shows c3, but you get the point.
OptimumTemperaturefinal.gif
photosynthesistemp.jpg
 
MichiganMedGrower

MichiganMedGrower

Well-Known Member
SPLFreak808 said:
In a 3x3 he should be pulling atleast close to a pound with a 600.

i know that 2lbs wont fit in a 3x3 so the added 600 makes no sense to me? Along with the fact that after a point too much light/heat will negatively affect photosynthesis. The second chart shows c3, but you get the point.
View attachment 4048827
View attachment 4048839
Click to expand...

I don't know many growers that can manage a 600 in a 3x3. That is a high intensity Grow for sure. Like 1000 in only a 4x4.

I get just under a pound in a 3x3 with a 400 hps.
 
legal_seagull

legal_seagull

Member
SPLFreak808 said:
In a 3x3 he should be pulling atleast close to a pound with a 600.

i know that 2lbs wont fit in a 3x3 so the added 600 makes no sense to me? Along with the fact that after a point too much light/heat will negatively affect photosynthesis. The second chart shows c3, but you get the point.
View attachment 4048827
View attachment 4048839
Click to expand...
The claim is "with this setup I can easily pull 3-3.25lbs from 9-16 plants on the 3x3". Maybe I'm missing something though?
And idk how 'co2 enriched' environment differs from one thats not, it didn't say. nor did it specify about ventilation or cooling so idk
mentioned 'dual bulb hood' if that makes any difference
 
Cubes15128

Cubes15128

Well-Known Member
legal_seagull said:
The claim is "with this setup I can easily pull 3-3.25lbs from 9-16 plants on the 3x3". Maybe I'm missing something though?
And idk how 'co2 enriched' environment differs from one thats not, it didn't say. nor did it specify about ventilation or cooling so idk
mentioned 'dual bulb hood' if that makes any difference
Click to expand...
Is this your first grow?
 
legal_seagull

legal_seagull

Member
SPLFreak808 said:
I mean, 1000 in a 4x4 is manageable but it takes daily attention.

Fwiw,
1000 ÷ 16 = 62w/ft
1200 ÷ 9 = 133w/ft which is more than double lol
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Its not something I've done so I can't justify it, just something I read.
What specifically is making this scenario seem so unlikely?
 
Cubes15128

Cubes15128

Well-Known Member
legal_seagull said:
No, I stated that I found it on another thread while trying to find my own answers.
This is why I asked my question, just cuz I read something doesnt mean its right. I need insight!
See you guys had my answers all along! lol
Click to expand...
Gotcha lol and yep the people here are pretty good about answering questions, good luck with the grow :bigjoint:
 
legal_seagull

legal_seagull

Member
SPLFreak808 said:
130w/ft2 is a waste of electricity & c02, the plants hit its own metabolism limit long before that and would have simply yielded WAY more running two 3x3s at 65w/ft2.
Click to expand...
You can read the thread if you want over at THC Farmer "watts/lumens per sqft" by Texas Kid or something
 
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