4x4 with 630w CMH light?

KK4IEM · Feb 17, 2018

Is 630w enough light for a 4x4 area in a 4x8 grow room? Or should I use 2 630w CMH lights.

Is anyone else using these CMH light with good results?

Olive Drab Green · Feb 17, 2018

KK4IEM said:
Is 630w enough light for a 4x4 area in a 4x8 grow room? Or should I use 2 630w CMH lights.

Is anyone else using these CMH light with good results?

Maybe even too much. 315w CMHs are pretty awesome.

gr865 · Feb 17, 2018

I run two 315's. in my 4x4

KK4IEM · Feb 17, 2018

gr865 said:
I run two 315's. in my 4x4

How it the heat off these lights?

gr865 · Feb 18, 2018

Minimal, I have my ballast remote and not in the tent.

AbeFroman · Feb 18, 2018

I run a 630 in my 5x5. Its more than enough for a 4x4

KK4IEM · Feb 18, 2018

AbeFroman said:
I run a 630 in my 5x5. Its more than enough for a 4x4

What distance are you keeping the light away?

AbeFroman · Feb 19, 2018

KK4IEM said:
What distance are you keeping the light away?

I would say about 16-20"

gr865 · Feb 19, 2018

I too run 16 to 20", maybe a tad higher when plants are young and when I first put them into flower to induce more stretch. That's depending on the strain I am growing.

Jjlaw95 · Apr 9, 2018

I Was thinking of putting a 600W in a 3x4.. after reading this I might reconsider.. it is 8ft in height so I could always put it a tad higher if needs be.. thoughts guys? Just quickly how many plants are yous growing in what space please?

4x4 with 630w CMH light?

KK4IEM

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Olive Drab Green

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gr865

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KK4IEM

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gr865

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AbeFroman

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KK4IEM

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AbeFroman

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gr865

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Jjlaw95

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