Quality of weed grown with fluorescent lights?

Pupu said:

No way ) I'm a believer.

I've started a post asking you about positioning & distance of the light, vent, reflective material or withe ...................then I've realized that better ask for photos and if not then I ask the questions

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Read through those threads...lots of people had good questions that i tried my best to answer. I didn't use reflective material at all. The walls of that closet are kinda dull white...and believe it or not matte white is pretty good for reflectivity. I saw a chart around here somewhere one day...that pro mylar stuff was highest in reflectivity...but matte white was 2nd and not all that far behind. Gloss white was like 4th...and aluminum foil was next to last AND it had the issue of creating "hot spots" that could burn.

dead last on the chart was mirrors fyi. I know...all the sci-fi stuff we saw growing up always showed mirrors bouncing around light and lasers like crazy...but now I remember...mirrors were dead last for GROWING purposes.

I know... I dont have Mylar to have some tests but what i can tell you is that from what I've measured with my meter nothing beats withe matte unles you are making a reflector.
I put all my money down on withe that it beats even mylar on a flat surface.
Explanation is logical: Mylar bounces light back but if it bounces anywhere but plant it bounces again and again until is lost.
On the other hand withe matte surface is glowing so you have an entire box emitting light in all directions.

Pupu said:

incandescent? 60?




an helpful answer will follow.

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yea i know what youre thinkin lol
its just in the veg stage now but i gotta get a light i just dont know what kind to get. hopefully something that goes in a clamp lamp or comes with one cause i dont have a lot of room or money to work with.

i gotta step it up tho before the flowering stage

mcrtbsa7xava said:

yea i know what youre thinkin lol
its just in the veg stage now but i gotta get a light i just dont know what kind to get. hopefully something that goes in a clamp lamp or comes with one cause i dont have a lot of room or money to work with.

i gotta step it up tho before the flowering stage

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dood...the type of bulb you are using...is useless. buy a cool white cfl. then buy a bunch of warm white cfls for flowering.

oh btw way when i say i dont have a lot of room to work with....

...i mean im working with in a cupboard lol

mcrtbsa7xava said:

oh btw way when i say i dont have a lot of room to work with....

...i mean im working with in a cupboard lol

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If you were using even one cfl in that hood as opposed to the incadescent? You've have a plant with twice as many branch sets easy...do you have a fan on that ethopian?

MJ as any plant uses light to combine CO2 with minetals from soil. Light is the most important thing you can give to your plant

And it goes like this:

Sun is putting out about 120.000 Lumen/sq meter

we can grow weed by artificial lighting using the folowing lamps:

1.HPS (high pressure sodium)
2.Fluorescent tubes
3.MH (metal halide)
3.CFL (compact fluorescent)

to have a idea this is how efficient they are:
(efficiency is measured in how many lumens they put out for each watt that is consumed)

HPS 100-160 lm/w
fluorescent 80-104 lm/w
MH 80-100 lm/w
cfl 40- 65 lm/w
incandescent 10- 15 lm/w

for a single plant (we consider that a sq foot) the sun is putting about 10.000 lumen ....so do the math.
then you should consider that HPS & MH need ventilation.

you forgot to mention LED

Cru3l said:

you forgot to mention LED

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I did not forgot, I've omited.

The pour guy is using a 60w incandescent light... my girlfrend tels me that anyway is possible that My post was confusing...

p.s. Also omitted was sulfur lamps

before I go to sleep

incadecent light bulbs do not work well for marijuana growing..
they tend to make the plant stretch and put most of it growth to the branched and stem.

you can use red light bulbs with a mix of cfls or whtever else your using..
just not by them self

and ur idea looks fucking wicked haha
still curious to see what the plants doo

Pupu said:

before I go to sleep

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That many t-5s should work great. Only thing is the height, how high is that dome? you might have to lst the hell out of those plants, or do 12/12 from seed grows. I really like that setup though. Is the structure (the overall dome) rigid or is it flimsy? and what did you use to build it?

people also laughed at Columbus when he said he could grow good tree with cfl's

Pupu said:

before I go to sleep

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Pupu, love the chamber, you're definitely an innovator
just damn cool

yea i got a fan on it, i was just using this incandescent for the veg stage but like i said i GOTTA get something better.

so get a white cfl? what is that and does it get hot and what kind exactly should i look for?

Hi everybody.

Thanks for your kind words.

The plants, as you can see from the pictures below, are reacting just fine.

The dome is made from expanded polystyrene cutted with a computer aided machine. If you go back one or two pages you will see more details.

The box is quite stiff even now without the lower end. After is finished it will be a computer desk so i will be able to roll it around, there is still a lot of work/parts/money to go inside.

Exterior dimensions: 30''w x 32''h x 47"l
Interior dimensions: 23''w x 29''h x 35''l (usable space)

Any questions are more then welcome as I anyway bore my girlfriend to dead.

mcrtbsa7xava said:

yea i got a fan on it, i was just using this incandescent for the veg stage but like i said i GOTTA get something better.

so get a white cfl? what is that and does it get hot and what kind exactly should i look for?

Click to expand...

cool white cfl for veg...a few of them...triple the number when you buy warm white cfls for flowering as the plant will be that much bigger.