Light to Plant Ratio

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vegas321

Active Member
What is the general Wattage to plant ratio ?

a) If i had a 1000w light how many plants can grow at optimum capacity?
b) If that light was on a mover would that increase the optimum number of plants or would the existing plants simply recieve better light coverage ?

Misc Question:

Besides lights what is the next biggest wattage consumer ?

Note: there would be additional florecent lighting for the (veg state). This question is more or less for the flowering/bud cycle
 
potroast

potroast

Uses the Rollitup profile
I don't know about that ratio, but I can help. :-)

An easy way to look at it is by square footage of canopy.
A 1000w lamp will light a 5x5 foot area fairly well. That will give it 40 watts per square foot. That would be the minimum you want for good buds.
Now in that space you could grow from 1 to 100 plants, depending on the size you want them to be when you finish.

A light mover will allow for better light because you can keep the lamp closer to the plants, since it doesn't stay in one place.

HTH :mrgreen:
 
Widow Maker

Widow Maker

Well-Known Member
Good advice. I have 2 1000w bulbs on a mover. If I remember right (prolly not) its 8'x20' . Well something like that anyways. I am thinking about getting 2 more lights since I believe it will grow larger and faster.
 
V

vegas321

Active Member
Widowmaker. How many plants are you growing under your two 1000w lamps if you dont mind me asking ?

The reason I ask is I am trying to get maximum yield from about 48 kWh per day. Since that seems to be the average consumption of a residence.

Trying to avoid raising any unnessacary red flags.
 
Garden Knowm

Garden Knowm

The Love Doctor
potroast said:
A light mover will allow for better light because you can keep the lamp closer to the plants, since it doesn't stay in one place.

HTH :mrgreen:
Click to expand...
:hump: :hump: :hump: :hump: :hump:

VERY KEY.. think of a mover as a method of keeping a light closer to your plants... MOVERS are fantasic and under rated....

I prefer thinking of a 1000 watt BULB as a 4x4 light "FOOT PRINT".. and on a mover I think of it as a 4x6 light "FOOT PRINT" .. ...
 
Widow Maker

Widow Maker

Well-Known Member
vegas321 said:
Widowmaker. How many plants are you growing under your two 1000w lamps if you dont mind me asking ?

The reason I ask is I am trying to get maximum yield from about 48 kWh per day. Since that seems to be the average consumption of a residence.

Trying to avoid raising any unnessacary red flags.
Click to expand...

Right now there is 228. I should prolly be using half of the space that I am.
 
V

vegas321

Active Member
My plan is to operare one 1000w light with a mover and ventilation similar to widowmakers set-up for about 50 plants. I think this should be sufficient for a decent yield.

I would like to be yielding about 300 grams per plant. Is this realistic ? (provided fertilization and watering and temp and humidity is properly timed and measured)

Also to widow maker, how many kWh do your fans and filters add up to ?
 
Garden Knowm

Garden Knowm

The Love Doctor
Over 10 ounces per plant... times 50 plants = 500 ounces divided by 16 ounces = 31lbs...

ummm. no that is not realistic for a single 1000 watt bulb... actually that is beyond fantasy.. that is plain old deranged... : )

Did I do the math correctly...?

lol

If you get 1 ounce (28.5 grams) per plant.. you will have done very well..

50plants X's 1ounce = 50 ounces = 3.1 lbs = VERY GOOD... and probably/nearly IMPOSSIBLE.. : )
 
skunkushybrid

skunkushybrid

New Member
The clone king who came to visit today also made us raise the plants up closer towards the lights, and he told us today that from looking at the plants and how developed the buds are already he'd say we could get 3oz per plant. Do you think this is too much to expect from our first time and in soil? He also told us to invest in a product called carbo-load which we can use alongside our green... whatever, blooming stuff.
 
V

vegas321

Active Member
I think I am beggining to understand the pattern here.

I think i was mislead by the numbers on the seed adverts which stated numbers like 300-500 (grams ?! per plant ?!)

I guess these are theoreticall calculations under perfect conditions with extreme light :confused:
 
V

vegas321

Active Member
I think I am beggining to understand the pattern here.

I think i was mislead by the numbers on the seed adverts which stated numbers like 300-500 (grams ?! per plant ?!)

I guess these are theoreticall calculations under perfect conditions with extreme light :confused:
 
Widow Maker

Widow Maker

Well-Known Member
vegas321 said:
I think I am beggining to understand the pattern here.

I think i was mislead by the numbers on the seed adverts which stated numbers like 300-500 (grams ?! per plant ?!)

I guess these are theoreticall calculations under perfect conditions with extreme light :confused:
Click to expand...
By buddy just did 80 plants and got 3.5 lbs. And that was pretty good. That was 2 1000w hps on a mover. I think its the last pic in my growfaq.

Usually what the seed companys mean is per square meter. So if you grow a plant thats 3'x3' then thats the amount you will get out of one plant. I do it differently. I have 9 plants in a meter. Well maybe a couple more than 9.
 
Garden Knowm

Garden Knowm

The Love Doctor
vegas321 said:
I think I am beggining to understand the pattern here.

I think i was mislead by the numbers on the seed adverts which stated numbers like 300-500 (grams ?! per plant ?!)

I guess these are theoreticall calculations under perfect conditions with extreme light :confused:
Click to expand...

YES.. YES.. YES.. :hump:
 
badmojo

badmojo

Active Member
The numbers that you are seeing on the seeds adverts state 300-500gr /M2 - they are saying that you can achieve 300-500gr per square meter i believe. correct me if im wrong here :)
 
Hairy Bob

Hairy Bob

Well-Known Member
Yeah the seed breeders will state the yield in perfect conditions, with a good few months of veg time to make them huge.
1g/w is a target to strive for, 0.5g/w is good for a first time grow. As far as I know that's the most reliable way to gauge yield.
 
B2GROW

B2GROW

Active Member
vegas321 said:
I think I am beggining to understand the pattern here.

I think i was mislead by the numbers on the seed adverts which stated numbers like 300-500 (grams ?! per plant ?!)

I guess these are theoreticall calculations under perfect conditions with extreme light :confused:
Click to expand...
They usually give that rating in meters squared
 
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