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how many lumens to grow weed

How many lumens does the plant need?

fml456
Active Member
herballuvmonkey
Well-Known Member
Meethrip
Member
Member

your plant doesnt cover an area of 9 feet does it?

i believe you need around 7500 lumens per square foot

Meethrip
Member

hmm. I think I may have mis-interpreted what herball was saying or he may have wrote it wrong.

I cannot quite understand how he has put this.

TheSeawulf
Member

hmm. I think I may have mis-interpreted what herball was saying or he may have wrote it wrong.

I cannot quite understand how he has put this.

Meethrip
Member
figtree
Active Member
samljer
Active Member

Probably because of wrong spectrum.

CFL can bud weed and grow it at a good pace just fine. IF you have the right spectrum.
Dont try buddin in blue (6500k)
wont happen.

samljer
Active Member

I have a space about 1 food deep by 2feet wide.

I have 3 bulbs in there CFL
2700+1700+1700 lumens = 6100 lumen

And people tend to say 2500+ per foot to veg and 3000 to bud *(3500 for denser) is fine.

and you know what, it is.
eventually im going to get 3 bulbs all going at 2700, but they last 10000 hours ;P
and ive done 3 plants at a time with no issues.
So ill give you the advice ive been given by experianced CFL growers and not guys who use HID and say CFL wont bud.

CFL will bud your weed fine at 3000 lumers per each food squared of area.
During budding keep them 3″ near plant tops and they will penetrate fine.

now before all you HID junkies come at me,

Remember, it’s not a contest: We all love the same plant, and there’s hundreds of ways to grow her right. Arrogant growers love to put down other people’s nugs and argue for days about why nobody can produce better pot than they can. These types actually end up infusing some of that negative and competitive energy into their plants. – Unknown Author (High times)

Pacific
Member
Infomad
Member
offworldvacations
Active Member

veg phase: 12 hours on 5.5 off, 1 on 5.5 off (that’s 24 hours). this cycle will not harm your plants and will perform better and reduce about 40% of your energy consumption and you will not have the issues that 24/24 gives you.

flower phase: when you switch to flower go 11 hours and then every two weeks reduce the light by 30mins and when you get to about 9.5 hours just let the kids finish up that way. (this mimics nature and performs better). if your plants won’t finish budding. whatever cycle your using, drop the hours and the plant will do better and finish up.

plants do not perform better under 24 hours of light. let them rest, there are things going on in the dark that are necessary.

and use. induction or led or plasma in combo with uvb bulb. plasma doesn’t cut it without help, wihich is why you should use induction / efdl lighting.

Tyronebiggems74
New Member

I have a space about 1 food deep by 2feet wide.

I have 3 bulbs in there CFL
2700+1700+1700 lumens = 6100 lumen

And people tend to say 2500+ per foot to veg and 3000 to bud *(3500 for denser) is fine.

and you know what, it is.
eventually im going to get 3 bulbs all going at 2700, but they last 10000 hours ;P
and ive done 3 plants at a time with no issues.
So ill give you the advice ive been given by experianced CFL growers and not guys who use HID and say CFL wont bud.

CFL will bud your weed fine at 3000 lumers per each food squared of area.
During budding keep them 3″ near plant tops and they will penetrate fine.

now before all you HID junkies come at me,

Remember, it’s not a contest: We all love the same plant, and there’s hundreds of ways to grow her right. Arrogant growers love to put down other people’s nugs and argue for days about why nobody can produce better pot than they can. These types actually end up infusing some of that negative and competitive energy into their plants. – Unknown Author (High times)

I have a space about 1 food deep by 2feet wide.

I have 3 bulbs in there CFL
2700+1700+1700 lumens = 6100 lumen

And people tend to say 2500+ per foot to veg and 3000 to bud *(3500 for denser) is fine.

and you know what, it is.
eventually im going to get 3 bulbs all going at 2700, but they last 10000 hours ;P
and ive done 3 plants at a time with no issues.
So ill give you the advice ive been given by experianced CFL growers and not guys who use HID and say CFL wont bud.

CFL will bud your weed fine at 3000 lumers per each food squared of area.
During budding keep them 3″ near plant tops and they will penetrate fine.

now before all you HID junkies come at me,

Remember, it’s not a contest: We all love the same plant, and there’s hundreds of ways to grow her right. Arrogant growers love to put down other people’s nugs and argue for days about why nobody can produce better pot than they can. These types actually end up infusing some of that negative and competitive energy into their plants. – Unknown Author (High times)

I currently have 5 plants just sprouting up.. around how many lumens do you think i need..i think i'm running at about 10,000 lumens with cfls..what do you…

How many lumens do LED grow lights produce?

GrowLights
Mar 21, 2020 · 4 min read

What is the lumen in plants?
Lumen refers to a measure of the total amount of emitted visible light by a source. The total number of lumens varies according to the type of grow light, the type and number of plants, the total measurement of the area, the distance of the plants, and their height. If possible, you should also determine the current stage of your plant to know how much supplementary light you’d apply.

Moreover, if you have dec i ded to continue the process indoors, it is a must to know the preferable amount of lumens every plant should receive. Determining the precise number of lumens prevents any damages on your plant. Thus, supplies the necessary optimal light for their productive growth.

What is a Color Spectrum?
Plants are genetically programmed to grow using sun light, which we consider to be white light, or yellowish-white light. This light looks white because it contains all of the colors of a rainbow, and when these colors are all mixed together they look white.

Scientists use wavelength numbers to refer to the colors instead of color names, which is a much more accurate way to measure the color. So a red might have a wavelength of 630 or 660. Both of these look red to us, but they are actually different colors.

Plant biologists define light in the 400nm to 700nm spectral region as “photosynthetically available radiation,” or PAR. The unit for measuring PAR, micro-mols per second (μmol/s), indicates how many photons in this spectral range fall on the plant each second. Inexpensive PAR meters use sensors that respond over the entire 400–700nm spectrum and have their own sensitivity curves that require different calibration for sunlight, fluorescent and HID lighting. All these systems are too broadly responsive to measure an LED’s narrow emission spectrum. They make HID grow light seem brighter by over-measuring yellow-green light and make LED light seem dimmer by under-measuring red and blue light.

lumens per watt
In terms of lumens per watt, today’s double ended HPS grow lights are quite efficient compared to other types of traditional artificial lighting, producing over a 100 lumens per watt.

However, when we consider LEDs, light output has already exceeded 300 lumens per watt in the lab. Like most electronics, LEDs continue to increase in efficiency and decrease in cost per lumen of output.

How to Measure LED Grow Lights?
So, how should we measure LED grow lights? The strength or intensity of the light can be measured by the total wattage of the LED grow lights. The higher the wattage, the more intense the light will be. The coverage area of a grow light is another good measure of its strength. Another measure is the photosynthetic action radiation (PAR) output of a grow light, which measures the effectiveness of a grow light for plant photosynthesis.

Best LED Grow Lights for Sale 2020

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What is the lumen in plants? Lumen refers to a measure of the total amount of emitted visible light by a source. The total number of lumens varies according to the type of grow light, the type and…