Light Placement

[Hash Man]

I am setting up a new room design and need a pointer in the right direction about light placement. for a while now, i have had the wings of my reflectors pointing towards the aisles between rows of plants. i am thinking about turning the reflectors inward so the overlap of the lights hits the row of plants rather than the concrete in the row.... Any help is appreciated. HM.

also will i need to compensate with bigger fans for the extra ducting it will take to make this work?

 

[Hash Man]

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I would really appreciate some help here. Many of my threads have gone unanswered... Does anyone have any thing to say at all? Thanks, HM.

 

[B. Self Reliant]

Maybe I'm just slow, but I'm not really sure what you're asking.

If you're asking if the lamp's light should be directed towards the plants instead of letting a portion of it spill onto the concrete floor, then yes, the light should be directed at the plants.

Maybe a picture or a more articulate question is required?

 

[Bozo]

kinda hard question to answaer .Why you need more ventilation ,you adding another light? Put lights over top of plants ,yes your lights should overlap alittle
I run 2 k over a 3.5x5.5 table so I dont belive in to much light .My theroy is if you think you need more light you probably do .That or more plants so light cant hit concrete.
Short answer place lights where they best cover plants not the floor

 

[Hash Man]

More articulate ....

More articulate ....

hey thanks for the answers, lemme try to be more articulate.

its just a question of light placementy in relation to my hoods.... i have three rows of plants going and the way the reflectors are setup, the overlap of the lights hits the aisles.... let me try to map it out.


here is the setup.... imagine the arrows as the direction the overlap is pointing.

<> <> <>
<> <> <>
<> <> <>


ok... if i turn the lights 90 degrees then the overlap will hit the plants and not the rows that i use for watering.

^ ^ ^
V V V

^ ^ ^
v v v

^ ^ ^
v v v

is that a bit better? thanks for any input.

my yields have been low and i believe it is related to incorrect light placement.

 

[B. Self Reliant]

I see what you mean now. One of my setups has a 2x4 tray with a 600 over it, so my rectangular canopy isn't perfectly positioned for the square area that the majority of my most intense light falls into. But hey, space and other factors will dictate, so . . . .

I'd say your best bet is to see which arrangement allows less light to fall off of the canopy and onto the ground. I generally think of a 600 as covering a 3x3 area and a 1000 as covering a 4x4 area. Anything outside of that "ideal zone" will be subpar from my experience. Which arrangement puts more plants into this "ideal zone?" Fixed lights already produce uneven canopies, so if one row of plants gets light from the two lights overlapping, it will just exacerbate the problem, right? I myself would worry more about the light being hung at the proper height from the canopy and the plants being within that ideal "footprint" of light than whether plants are in that overlapping zone or not.

Could always try it both ways and see.

 

[Hash Man]

yea thats why i am switching over to this new setup, as the old way has not worked so well for me... its nice to get some info from those who have tried before. Any one tried the switch method im speaking of!?????