What size of area do hps make useable?

[tusseltussel]

like i said im not here to argue

i dnt care what overgrow says... it is old info

i dnt care to see pictures of grow rooms

it doesnt prove a thing to me

5-7000 lumens per sq ft

i speak from expiriance you quote old info and speak of your first grow

good luck im done

unsubscribed

 

[boston george 54]

LOL

Overgrow GrowFAQ's http://www.drugs-forum.com/growfaq/GrowFAQ Basic Topics.htm


above is taken from overgrow FAQ and is that is pritty much the holey grail when it comes to growing.

here is my 4x4 room with 1000w lamp this room yeided over a gram per watt

and here is a room under 2 x 600w each light is covering 1m x 1m

first off great room and 1000 grams in a 4x4 is great
i have a real problem getting 1gpw whith 1000 but throw a 600 in there and i am all about 1gpw

i belive the only thing really be disputed here is
there is no holy grail
overgrow was great but not the end of all ends

in the overgrown faq or fourm i never remeber vert setups being tested and i belive they have more potinal then any 1000 thrown in a 4x4

there is a guy fairly local that pulls 800 grams per 600 in a vert set up now granted i strugled to hit 550 per 600 in my last and first vert

one more time overgrow was great but no reason to kiss-ass

 

[jordisgarden]

if your a first time grower id say get some cfls, like maybe 4 of em and grow 2 plants and then move up. with each grow your yeilds will get better and better as will the quality and size of the plants..good luck bro...

by the way what ever happened to overgrow.com? did they get shut down?

 

[9inch bigbud]

like i said im not here to argue

i dnt care what overgrow says... it is old info

i dnt care to see pictures of grow rooms

it doesnt prove a thing to me

5-7000 lumens per sq ft

i speak from expiriance you quote old info and speak of your first grow

good luck im done

unsubscribed

old info that still stands today, go look round every cannabis forum and those are the numbers you will see! a 1000w trying to cover 6 x 6 room is to little light to grow fat arse buds you will grow more twig and stalks than buds. 27 w per sq foot V's 62 w per sq foot whats going to yeild more?

if you hang a 1000w over 6 x 6 room the plants will shade each other that will cut the light down even more you will have tall lanky plants that yeild a few grams.

grow them under a 1000w lamp in a 4 x 4 space and the whole room grows fat arse buds the size of your legs that yeild oz each not grams.

dont know where you get your info from 27w per sq is the best amount of light to use???

im done also

 

[by1969]

whats the min/max distance of a 1000 m.h height from the plant

 

[9inch bigbud]

first off great room and 1000 grams in a 4x4 is great
i have a real problem getting 1gpw whith 1000 but throw a 600 in there and i am all about 1gpw

i belive the only thing really be disputed here is
there is no holy grail
overgrow was great but not the end of all ends

in the overgrown faq or fourm i never remeber vert setups being tested and i belive they have more potinal then any 1000 thrown in a 4x4

there is a guy fairly local that pulls 800 grams per 600 in a vert set up now granted i strugled to hit 550 per 600 in my last and first vert

one more time overgrow was great but no reason to kiss-ass

i agree, but overgrow played a big part in how people today grow and dont even know it. i.e Vert grows SCROG, krusty buckets, hempy buckets, LST, FIM, super cropping, air cloneing ect.. it all started out with experiments on overgrow and today they are called the normal way of doing somthing or should be done, but back in the day it was all new and experiments were done on almost every light, growing method, nutes, boosters you name it? it was fucked about with and tweekd to the max on overgrow before anywere else and all most everything today can be searched back to overgrow.

you know your self if you used to be a memeber the crazy shit that people would experiment with in their grow rooms. just befor it got shut down i think 4-5 million hits per day from growers from all over the world nothing comes close to that today or never will again IMOH?

you dont remember the member So Quick and his 10lb coliseum grows (vertical)??

enough reminiscing for one day

 

[fureelz]

word up jordisgarden! I just built another room for a trial test...Going to veg this girl with 1 400w HPS for 6 weeks on 18/6 by herself. Ive never vegged with HPS but some ppl say it produces better results; I beg to differ. Oh it was a clone and I have before pics so far...4 weeks out for afters. what else..same nutes as the others in t5 room..thats pretty much it but so far I have seen faster leaf discoloration (loosing that shiny green)...

 

[flex]

i veg with hps and they grow pretty fast

 

[TeaTreeOil]

• 100 watt lights: 1.5FT x 1.5FT growing area
• 150/175 watt lights: 2FT x 2FT growing area
• 250 watt lights: 3FT x 3FT growing area
• 400 watt lights: 5FT x 5FT growing area
• 600 watt lights: 6FT x 6FT growing area
• 1000 watt lights: 8FT x 8FT growing area

So...

• 4222 lm/sq ft
• 3750 lm/sq ft
• 3222 lm/sq ft
• 2000 lm/sq ft
• 2500 lm/sq ft
• 2188 lm/sq ft

2000 to 4222 or 211% increase

I'dhave to disagree. A 1000 will never cover 8x8 you might get 6x6 but 5x5 will produce much better

So...
3889 to 5600 lm/sq ft 144% increase

you would be better off with 2 small lights rather than 1 large lamp. 5 x 2 x 50watts per sq foot = 500w i would go for 2 x 250w lamps for better light covarage and it will be easyer to keep cool with 2 smaller lamps than one large lamp also the added bonus of being able to place the 2 smaller lamps closer to the plant tops. it may cost you more to buy 2 light, but it will pay for its self with in 1 grow.

2 x 250 is about 2 x 29,000 lm. 58,000 lumen versus 600W which does 90,000. Or 400W which does 50,000.

116 lm/w compared to 125(400w) to 150 lm/w(600w).

I don't understand your advice.

this is from subcool and is accurate you need no more and no less

subcool

Moderator
Stoner

Join Date: Jan 2008
Location: In a Reefer patch
Posts: 806
Gallery: https://www.rollitup.org/marijuana-pics/index.php?u=33442

​

Canopy Managment 101
permalink
I see many grow rooms in my travels and I also see lots of bad practices and nasty looking canopies. I thought I would try and shed some light on the problems I see popping up the most.

#1. Improper use of lights!

It is common for growers to want to group all there plants under the hoods but this can cause a few problems. Many Sativa varieties will fox tail and form dready buds if the light intensity is to high.

Your wasting space if your not covering 6x6 with a 1000 watt hood!

Indoor Theory

Lighting​

Lets discuss a few ways to construct a indoor grow room. According to your local laws, each state has a different limit of plants that can be grown in a space. I find it best to always have less plants budding than allowed so we will be learning to keep our plants in the vegetive state longer than normal all the while training and shaping the plants for maximum production indoors. In my youth we would run as many as 40 plants under 1000 watts in a 6x6 area. Now we design bud rooms to run between 4-6 plants in the same area with the same wattage lights. The yield is very similar and the main difference is the amount of time the plant is grown under an 18/6 lighting schedule. The plants are topped and shaped to form a wide bush that will finish with multi-headed and at a height of around 5-6 feet. Think of each area covered by a 1000 watt light as a 6x6x6 Cube that you are going to fill with Cannabis. By using 3 separate areas designated as Cloning area, Vegetive area, and Budding area, you can continually harvest medicine every 60 days.

We are going to use some firm measurements in this teaching example but almost any configuration will work that allows the three areas to be constructed. Every light/bulb has a foot print. This means the area that can properly be covered for maximum production.
They are as follows
1000 Watt Hoods…………6x6
600 Watt Hoods………….5x5
400 Watt Hoods………….4x4
250 Watt Hoods………….3x3

So...

• 3889 lm/sq ft
• 3600 lm/sq ft
• 3125 lm/sq ft
• 3222 lm/sq ft

3125 to 3889 124% increase.

150/175 watts covers approximately 2’ x 2’ area
250 watts cover approximately 3’ x 3’ area
400 watts covers approximately 4’ x 4’ area
600 watts covers approximately 6.5’ x 6.5’ area
1000 watts covers approximately 8’ x 8’ area


from sunlight supply

i belive you need more and will always give more but thinking outside the box can get you great yeilds and can fuck you aswell.

exp and see what you like



http://www.n-g-w.com/ngw/literature/techguide.pdf

So for 600w, 2130 lm/sq ft. And for 1000w 2188 lm/sq ft.

So apparently, overall, 2000 lm/sq ft was the suggested minimum, and 5600 lm/sq ft was the suggested maximum -280% increase.

No wonder no one knows what to think!

So here's CFLs, for reference:

 

[fureelz]

i hate math

 

[TeaTreeOil]

I do it in my head... it's somewhat involuntary.

 

[fureelz]

that would be a gift...thanks for sharing...if i had 2 600w hps in a 10x8x8 what would my numbers be?

 

[TeaTreeOil]

It depends how you set them up. And the distance from the floor.

Basically, 2*90k = 180k lumens
over 10x8? = 80 sq ft
180000 / 80 becomes:
180000 / 2 / 40 simplify
90000 / 40 becomes:
90000 / 2 / 20 simplify
45000 / 20 becomes:
45000 / 2 / 10 simplify:
22500 / 10 =
2250 lumens sq ft done!

Break it into easier problems.

 

[fureelz]

very nice! and what you said in the beginning is also what I said

 

[sogbunn]

400= 5x5???

 

[fat sam]

1k light will do a shit job in an 8x8, thats only like 15 watts per square foor, you need at LEAST 20 per foot for buds, and then they will be only a fraction of what they could be, you really want 50 watts per foot of hps light, more is better but 50 will give very good results, all the specs you see on the box of the light are not for weed, they are for plants that have less light requirements

 

[weedman013]

Determine the square footage of your area (example in a 4 foot by 4 foot area, there is 16 square feet)
If you have a 1000 watt High Pressure Sodium, that produces (approx.) 107,000 lumens.
Divide this by 16 (your square footage) 107,000 / 16 = 6687 lumens per square foot.
So just divide the total amount of Lumens, by the total amount of Sq ft, and that’s your lumens per square foot

 

[fureelz]

whats a lumen compared to a watt?

 

[Snowchild]

Hey people,

I find this subject interesting, to say the least. Can we really say we fully understand the dynamics of plant growth.. Of course we have science etc to base our many deductions on, but can we really determine down to a finite variable, what the best way to approach the novel enterprise of marijuana growing to possibly be?

Anyways, aside from my little interjection, excuse me i am quite stoned love it!

I was wandering, in relation to this matter of watts, lumens, and all the rest of it.. I have a small grow area, in a cupboard in my little apartment. It is approx. 3' wide, 2' deep, and 3' high. I currently have an array of CFLs - 6 x 20W and 1 x 85W - and i have just ordered a 70W HPS.

I have 4 plants under the CFLs at the moment, with daytime temps of 78 - 84F. Dropping to mid 70s at night. According to the packing my CFLs were contained in, i should be working with just under 12000 lumens.

My question is, how many lumens is a 70W HPS? If 150W = 16000 Lumens then would a 70W = 8000? If so, then i'll have 20000 lumens in a 3 x 3' space.

What would an approximation at the possible yield be? Would i be correct in saying that in taking 3 x 3' = 9 and i have 20000 lumens, so 20000/9 = 2222.2222 lumens in a square foot?

From the looks of things that seems to be moderate. Any input would be appreciated. Does anyone know what temp a 70W HPS puts out? This cupboard space is small and i only have a small extractor fan. But come to think of it i haven't put the fan in yet and the temps as i said above are from mid 70 - mid 80s.

I'm hoping to make this next grow a cracker!

Peace to all

 

[stephen94]

i have a 3x3x3 area with a 400W HPS with MH conversion bulb, and i fit 12 small plants in there