Lighting overkill?

[whatsthatsmell]

My one flower room that i am setting up is around 120sq foot, the clones/seeds/young plants veg under a 400w MH would 2 600w HPS for 120sq be over kill or just about right on? I thinking right on, but other opinions are welcome, the other flower room (for special purposes) has a 1k HPS and is about 80sq ft and they do fine in there, but again, its only a few that are "specialty" plants.

[the image reaper]

sounds like your 600 x 2 idea is about right, yup ... :smokin:

[whatsthatsmell]

I was thinking of a 1k and 600w HPS for that room, but i wasnt sure if the difference between lights would have an effect on the growth. Since the lights would be on different sides of the room the light wouldnt be as even as a dual 600w. Think that would have an effect on the growth if i did a 1k on one side and 600w on the other?

[the image reaper]

I suppose the plant may favor the brighter of the two, not sure about that one ... distance, etc., would influence that difference, so no biggie ... even so, it should be slight, and gradual, so turning the pots occasionally should remedy that ... :smokin:

[bongerstonerd00d]

You mean your room is 120 sq. ft. ?

Two 600 watt HPS's aint even near enough for an area that size. You're looking at 6-1000 watt HPS's or thereabouts. 1200 total watts means you are only going to have 10 watts per sq.ft.....

Multiply your sq. footage by minimum of 40, I use 50, and that will tell you what you need.

120 sq. ft. * 50 watts per sq. ft. = 6000 watts

Your two 600 watt HPS in combo would be good for around 24 sq. ft. ( 4' x 6' area).

You could divide that room up and make two flower areas of 20 sq. ft. and use 1000 watts in each area. That would give ya some kick ass results.




b0nger:thumbsup:

[socialistpete]

You mean your room is 120 sq. ft. ?

Two 600 watt HPS's aint even near enough for an area that size. You're looking at 6-1000 watt HPS's or thereabouts. 1200 total watts means you are only going to have 10 watts per sq.ft.....

Multiply your sq. footage by minimum of 40, I use 50, and that will tell you what you need.

120 sq. ft. * 50 watts per sq. ft. = 6000 watts

Your two 600 watt HPS in combo would be good for around 24 sq. ft. ( 4' x 6' area).

You could divide that room up and make two flower areas of 20 sq. ft. and use 1000 watts in each area. That would give ya some kick ass results.




b0nger:thumbsup:
I think he used HxWxL as his equation not LxW.

[whatsthatsmell]

I think he used HxWxL as his equation not LxW.

thats correct, a square foot is HxWxL. so a 10x10x10=100sq ft, if that helps you understand a little better. So simplicity, lets say my room is 10x10x10 (pretty close to my actually room anyways) so my thinking is that 1 600w HPS would cover a 5x5x5 and then the other would be 600w or 95k lum's for 5x5x5 for a total of 190k lums and the other option is 600w + 1000w HPS or 230k lums for 10x10x10.

[blink_inc]

nope.. that's cubic foot.
Length x Width = square/ft


10 x 10 is 100 sq/ft
10 x 10 x 10 is 1000 cubic feet

you want to acheive lumens per square foot.

[bongerstonerd00d]

LOL.........I give up.



b0nger

[gainesvillegreen]

LOL! Blink is right, think about it like this:

examples
LxW = 10ftx10ft = 100ft^2 (because it's a foot x a foot, or two feet, or feet squared)

LxWxH = 10ftx10ftx10ft = 1000ft^3 (because its a foot x a foot x a foot, or cubic feet)

Just remember, area is a plane and is flat, like the floor; area is always squared. Volume is 3-dimensional, like a whole room; volume is always cubic.

[Delta9Haze420]

I think he used HxWxL as his equation not LxW.


thats correct, a square foot is HxWxL. so a 10x10x10=100sq ft, if that helps you understand a little better. So simplicity, lets say my room is 10x10x10 (pretty close to my actually room anyways) so my thinking is that 1 600w HPS would cover a 5x5x5 and then the other would be 600w or 95k lum's for 5x5x5 for a total of 190k lums and the other option is 600w + 1000w HPS or 230k lums for 10x10x10.


nope.. that's cubic foot.
Length x Width = square/ft


10 x 10 is 100 sq/ft
10 x 10 x 10 is 1000 cubic feet

you want to acheive lumens per square foot.


LOL.........I give up.



b0nger

Sometimes I wonder... Just how high *are* some people who post here lol. I am truely completely amazed I am reading a thread that has become an explanation of exponents and physics... And to think almost none of my friends ever thought algebra, math, and science would apply in the real world hahaha...