MH Light Size

onthedl0008 said:

3000/72=41.666667 watts/sq.ft.

Check out OLDS grow man...Everything OLD says coincides with all the scientificaly reccomended info out there..Not to mention its what all the pros reccomend on here.

OLD once again much respect. How many lumens per square feet does that make?
Also i want to know how tall ur max veg hieght is before flower?

If I could Id Build my own mini me version of ur grow in my closet...But just need a lil more info..LMAO..

DL

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Mr. Howards grow is something similar, 600w x 6 lights for 3600w total and 54 plants. 5 gal pails take up a square foot, so roughly 54 sq. ft. too.

This all helps me somewhat. I have yet to determine the size of the veg pails and am not sure what the ideal wattage MH will be to use. I still would prefer to avoid two lights in the veg area. One light...one hood and one ballast would be my first choice. I am assuming pots in the 6"-8" dia range for vegging, so 18 x .5 feet is roughly 9 sq. feet and with the 40-50 watt per sq. foot formula that would be 450w max. Doesn't seem like enough?

Moss Man said:

Mr. Howards grow is something similar, 600w x 6 lights for 3600w total and 54 plants. 5 gal pails take up a square foot, so roughly 54 sq. ft. too.

This all helps me somewhat. I have yet to determine the size of the veg pails and am not sure what the ideal wattage MH will be to use. I still would prefer to avoid two lights in the veg area. One light...one hood and one ballast would be my first choice.

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well Mr. Howard must yield a storm of nugs....that sounds nice...

There is ongoing argument in regard to the efficiency of 1000w vs 600w. Mathematically I believe the 1kw wins out--but that goes back to lumens vs PAR watts. With $.16/kwh juice I would go with one light too...

I would be shocked if you need more than one light in veg since the plants will triple in size once flowered. Save those KW for buds that will make you grin ear to ear.

Good Luck....sounds like you are doing your research



-OitW

Moss Man said:

I am assuming pots in the 6"-8" dia range for vegging, so 18 x .5 feet is roughly 9 sq. feet and with the 40-50 watt per sq. foot formula that would be 450w max. Doesn't seem like enough?

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Sry...I didnt touch on this....

If you have 6" pots thats 36"sq per plant (.25ft.sq.)

18 plants-in a long row? correct?

You are going to veg till 1'tallx1w'x1'd??(little bushes-good for Indicas) then flower or are these mums that you will take clones from??....or are they sativa that get tall and narrow??

Lot of factors...count on lighting the finished size of the plants not the pot size.

I keep 60 mums under a single 1kw light and they give me 150 nice clones every 20 days...They get 2-3' tall, and about 18"x18"w between cuttings

so your right, doesnt sound like enough to me either.

Old in the Way said:

actually I would want to check my EYE Hortilux bulbs to be exact. Or test with a lux meter since the lamps have a bit of time on them now....but its around 3000lumens/ft in my grow 144k/24sq.ft--give or take
But we see lumens plants see PAR watts--more on that later



7-8" max




Np--hit my journal in hydro or the 4000w thread here--i feel bad jacking moss mans thread...already had to show my ass a little in here

thx for your support....i just want moss man to get the right value out of his lamp purchase...It is a relatively important component to indoor.....these other guys you can't tell anything to...unless you have a book on the shelves of BarnesandNoble..

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LOL sorry man I cant find ur 4000 journal put a link in here!Sorry just blazed..
I am happy to say Im at 66.666667 WATTS/SQ.FT. Pulled a 22 gram dry cola last grow.. In a 70 square foot area.. Im most happiest tho when i think of how many more plants i can add and how many more watts I can cram into this area!

Thanks OLD UR NUTS!

Old in the Way said:

A know-it-all I am not...you recommended a 1000w for 64 square foot. Thats 15watts per foot.

I do know how to divide, multiply, add....you get the point.



any of you want to offer a link to your grows. I am curious why my strains require three times the light....maybe I am doing something wrong

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A know it all you must be since you come on here telling everyone on the thread is wrong but yourself.

So If I take my 8x8 closet and grow 4 plants under 1000 watt light I will get crappy results and shouldn't do it ? What if I get brave and add 2 more for a total of 6 plants, they won't grow either will they ? What if I do just one plant it will probably die from lack of light.

That chart is guideline so if you would like to make a chart taking into account all variables go ahead and post it.

Also if we add another 1000 watt light to my 8x8 room and try to grow 2 plants they will probably do better. More light does equal better plants.

Do you get the point ? I doubt it.

Also I don't need to post any pics, I have nothing to prove to you or anyone else.

la9 said:

A know it all you must be since you come on here telling everyone on the thread is wrong but yourself.

So If I take my 8x8 closet and grow 4 plants under 1000 watt light I will get crappy results and shouldn't do it ? What if I get brave and add 2 more for a total of 6 plants, they won't grow either will they ? What if I do just one plant it will probably die from lack of light.

That chart is guideline so if you would like to make a chart taking into account all variables go ahead and post it.

Also if we add another 1000 watt light to my 8x8 room and try to grow 2 plants they will probably do better. More light does equal better plants.

Do you get the point ? I doubt it.

Also I don't need to post any pics, I have nothing to prove to you or anyone else.

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LA9 I get ur point...If U broke down and only used 25 SQ.FT. of the 64 SQ.FT room yes that is very possible indeed. Giving U exactly 50 watts/sq.ft... And that would be a very Nice grow indeed! In 25 sq.ft. given this watts/sq.ft. method I could easily flower 48 plants at a time in my system!

Sorry...Really blazed honestly but this thread is awesome.

Old in the Way said:

actually I would want to check my EYE Hortilux bulbs to be exact. Or test with a lux meter since the lamps have a bit of time on them now....but its around 3000lumens/ft in my grow 144k/24sq.ft--give or take
But we see lumens plants see PAR watts--more on that later



7-8" max




Np--hit my journal in hydro or the 4000w thread here--i feel bad jacking moss mans thread...already had to show my ass a little in here

thx for your support....i just want moss man to get the right value out of his lamp purchase...It is a relatively important component to indoor.....these other guys you can't tell anything to...unless you have a book on the shelves of BarnesandNoble..

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7-8" max thanks man...Ive been gowing 10-12 and thats way out of hand!

Simple concentration on the main colas X space equals more yield!

Just like ALS thread!

Maybe Bolivians don't understand per square foot of CANOPY---thats the are a of all the tops measured length x width.....do all the top of your plants measure 8'x8', i doubt it.....si entiendes.........if your four plants are 4'w and 4'deep and 6'tall and they fill the 8x8 closet then yes it will be crappy--except right under the light-

THE PRIMARY 5x5 AREA-thats 25 sqare feet....50 watts per foot

a far cry from a 64 square foot grow...see just because 8 is only 3 more than 5 doesnt mean that 8x8 is anything close to 5x5....are you a fucking dunce

do you get the fucking point....what a friggin moron......when I say 72 square feet I mean 72 square feet.....THE ROOM IS 179 SQUARE FEET--BUT I DON"T CLAIM TO HAVE A 13x13 GROW

Also I don't need to post any pics, I have nothing to prove to you or anyone else.

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sounds like someone is rocking some cfl's, if you knew what you were talking about you wouldn't post a chart designed to misinform the new grower.

Go in Advanced Cultivation and post that chart see what those guys say about it....when fdd2blk comes up and tells me thats spot on I will give up growing...........can't wait to hear the feedback

um isnt a 5 x 5 room with a 1000 watt bulb more like 40 watts per sqft ?
if 5 x 5 is 25 and 1000 / 25 is 40 not 50 ??
anyways im going to have to agree i have whatever sized room with a 1000watt mh conversion for veg and hps for flower and i dont dare go outside 5x5 because the light loss is simply too great.
ther is no way i could grow anything but popcorn at 8 feet X

so if i have a 1000 MH watt light it should cover a 8' - 8' area. but what i wanted to know was how high above the plants can i put the light for it to work the best. right know i have a 400 watt hps in a green house on 24 plants are in 8'' containers and they look like they are ready to go under the 1000 watt MH and i was wonder to know if the light will cover 8'-8' if the light is 5' above the plants. the clones are already a foot tall and ready to go in 5 gallon containers. have two 1000 watt MH if one is not enough. but because it gets sun light in the green hose i guess the light is just keeping them from flowering. so may be that is more than i need, just was asking people what they thought

Phinxter said:

um isnt a 5 x 5 room with a 1000 watt bulb more like 40 watts per sqft ?
if 5 x 5 is 25 and 1000 / 25 is 40 not 50 ??
anyways im going to have to agree i have whatever sized room with a 1000watt mh conversion for veg and hps for flower and i dont dare go outside 5x5 because the light loss is simply too great.
ther is no way i could grow anything but popcorn at 8 feet X

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lol, i am the friggin

Yep your right apparently i can't multiply..lol

But you know the deal and get what we are trying to express.....I was just pointing out that his coverages were way off in practical application.time to go to bed......my math will be better after some rest

Thanx guys, I am going to pull the trigger and order tomorrow.