Question about adding second 240w Quantum to 1 squared meter

Hi All you wonderful and knowledgeable people,

So, straight to the point: I currently have a 11 sq. foot (1mx1mx2m) tent in which I sport a 220w Highlight UV quantum board. I have come across a good deal and found myself a 240w LM301H board that I could not say no to.

Now, I know 220w in 1 squared meter was a little on the low side, hence why I jumped on this occasion... BUT, will 460w be too much for my grow space? Will I need to have a greater distance from the canopy or dim them down a lot? Or can I go as much as I see until the plant shows heat/light stress?

Also, Would it be safe to assume that I should use the one UV board for Veg, and during flower use the two together? I would not think the two would be needed during Veg... and that the UV one suffices, but you guys know more than me....

Sorry, I am a LED noob, have searched around, but did not find an answer to my satisfaction....

Thanks in advance!

Im running 2 2000w LED (4000w) in same space as you for a while now. seems to work well. Not sure if it's answers your question

Allbr said:

Im running 2 2000w LED (4000w) in same space as you for a while now. seems to work well. Not sure if it's answers your question

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What is the actual watt draw from the wall? Do you know? Also, are we talking blurple or white board/COB?

The actual watt is 202 a piece, they are spider farm sf2000 full spectrum grow light

Allbr said:

The actual watt is 202 a piece, they are spider farm sf2000 full spectrum grow light

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Amazing, thanks for the info, so esencially similar boards. Good to know you run that in there without issue! Do you dim at all, or 100% on both? do you use both for Veg, or only one?

Thanks for the info mate, it puts my mind at ease!

450 watts of good diodes in a space that size will work quite well.
I'm running the same power density in my main room and the plants love it.
Also, you can always dim down.

GBAUTO said:

450 watts of good diodes in a space that size will work quite well.
I'm running the same power density in my main room and the plants love it.
Also, you can always dim down.

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Thank you for your answer! i can always dim, that is true....

And would you run them both from the start on a lower power level, or stick to one during veg?

Running 3x 240w qb 3500k in a 3.3'x4.4'(100x135 cm), about 50 cm above canopy in flower. Dim for veg.

Those two boards will treat u good in that space no doubt.

Destroyer of chairs said:

Running 3x 240w qb 3500k in a 3.3'x4.4'(100x135 cm), about 50 cm above canopy in flower. Dim for veg.
View attachment 4698730
Those two boards will treat u good in that space no doubt.

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Amazing, thanks for the answer, just what needed! I assume you run them all dimmed duriing veg instead of just the 1 for better coverage?

blackdust07 said:

Amazing, thanks for the info, so esencially similar boards. Good to know you run that in there without issue! Do you dim at all, or 100% on both? do you use both for Veg, or only one?

Thanks for the info mate, it puts my mind at ease!

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I don't dim I use the both full power. Maybe I shouldn't but worked well so far.

Allbr said:

I don't dim I use the both full power. Maybe I shouldn't but worked well so far.

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No didn't dim yet hah, just raised the lights when needed. Option is there though if electric is expensive.
U use both switch is veg?

Destroyer of chairs said:

No didn't dim yet hah, just raised the lights when needed. Option is there though if electric is expensive.
U use both switch is veg?
[/QUOT

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Destroyer of chairs said:

No didn't dim yet hah, just raised the lights when needed. Option is there though if electric is expensive.
U use both switch is veg?

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Not sure what your asking?

Allbr said:

Not sure what your asking?

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Quoted wrong comment. Meant to ask op if he use both switches in veg

Destroyer of chairs said:

Quoted wrong comment. Meant to ask op if he use both switches in veg

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Switches? I dont have switches if you refer to the veg/bloom switches some blurples have, I dont have that, just a dimmer. If you refer to using the 2 actual boards, I am going to start using the 2 straight from veg, dimmed down.

blackdust07 said:

Switches? I dont have switches if you refer to the veg/bloom switches some blurples have, I dont have that, just a dimmer. If you refer to using the 2 actual boards, I am going to start using the 2 straight from veg, dimmed down.

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I also got qb's white light boards but they have a switch for flower + dimmer. Was just curious if u had any experience with it. I never used mine in veg but thought maybe I'm missing out. Carry on

Destroyer of chairs said:

I also got qb's white light boards but they have a switch for flower + dimmer. Was just curious if u had any experience with it. I never used mine in veg but thought maybe I'm missing out. Carry on

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I see! no, I do not have a switch unfortunately, One of the boards has UV range, but it's always on. Thanks for answer, I think I am at ease and gonna happily put the 2 QB's in there!