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Wisher2

Wisher2

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linky said:
I am replacing all my 1k hps's. I am torn if I should be running 3590's at 1050 mah or 1400. I watch growmau5 channel and he recommends 1050 mah for efficiency but I would need/want nearly 1 cob per sq foot of space. If I were to drive them at 1400 to start with how many cobs per sq f would be recommended to give equal coverage/power of running them at 1050? I do not want to be short on light.

thanks all
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how many sqft are you working with?
 
Airwalker16

Airwalker16

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linky said:
I am replacing all my 1k hps's. I am torn if I should be running 3590's at 1050 mah or 1400. I watch growmau5 channel and he recommends 1050 mah for efficiency but I would need/want nearly 1 cob per sq foot of space. If I were to drive them at 1400 to start with how many cobs per sq f would be recommended to give equal coverage/power of running them at 1050? I do not want to be short on light.

thanks all
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I'd run em at 1750 or even 2100 mA!
 
Mathematix

Mathematix

Member
linky said:
I am replacing all my 1k hps's. I am torn if I should be running 3590's at 1050 mah or 1400. I watch growmau5 channel and he recommends 1050 mah for efficiency but I would need/want nearly 1 cob per sq foot of space. If I were to drive them at 1400 to start with how many cobs per sq f would be recommended to give equal coverage/power of running them at 1050? I do not want to be short on light.

thanks all
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this seems to be what youre looking for

https://www.rollitup.org/t/diy-cob-led-calculator.890214/
 
linky

linky

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REALSTYLES said:
For 250 sq/ft you'll need 12.500 watts that's 50w per sq/ft which is optimal and that would be 250 cobs of the CXB3590 at 56% efficiency.
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That is running them at 1050 mah? If I were to run them at 1750 I would need approx 160 cobs correct?
 
REALSTYLES

REALSTYLES

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linky said:
That is running them at 1050 mah? If I were to run them at 1750 I would need approx 160 cobs correct?
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at 1400ma, but some people want to run them harder and won't be able to passively cool their light and you lose photons. Also you'd be looking at least $22,000 in parts for sure. Don't be confuse about how many watts are being driven per cob but how much PPF is produced at a lower current.
 
linky

linky

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REALSTYLES said:
at 1400ma, but some people want to run them harder and won't be able to passively cool their light and you lose photons. Also you'd be looking at least $22,000 in parts for sure. Don't be confuse about how many watts are being driven per cob but how much PPF is produced at a lower current.
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Using the DIY cob calculator it says 20 3590's at 1750 mah in 30 sq f area would give 980 ppfd, so 160 should be enough for 240 square foot, correct? Or am I doing it wrong? :)
 
JorgeGonzales

JorgeGonzales

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REALSTYLES said:
For 250 sq/ft you'll need 12.500 watts that's 50w per sq/ft which is optimal and that would be 250 cobs of the CXB3590 at 56% efficiency.
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Or, you know, not that much. Respectfully, I'm not sure 1400 PPFD is optimal. That curve flattens out at the top.
 
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JorgeGonzales

JorgeGonzales

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linky said:
Using the DIY cob calculator it says 20 3590's at 1750 mah in 30 sq f area would give 980 ppfd, so 160 should be enough for 240 square foot, correct? Or am I doing it wrong? :)
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You could just do the math yourself if you want. Lumens * .01435 gives you PPF, divide by area in square meters to get PPFD.

@REALSTYLES is recommending a fuckton of light. Nothing wrong with that, but it will sure cost you.
 
JorgeGonzales

JorgeGonzales

Well-Known Member
REALSTYLES said:
Do you wanna win or not? lol, I know up front cost is up front cost and no way around it if you want shit done right.
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Again, the curve flattens out, it's a hyperbolic curve. I'm sure you've seen this:

image.jpg

Every carbon fixation curve looks like that, the ppfd numbers just change.

So 40% more light for umm...5% more yield? That's a different type of inefficiency, maybe it makes sense, maybe it doesn't. But thems the facts.
 
REALSTYLES

REALSTYLES

Well-Known Member
JorgeGonzales said:
Again, the curve flattens out, it's a hyperbolic curve. I'm sure you've seen this:

View attachment 3718289

Every carbon fixation curve looks like that, the ppfd numbers just change.

So 40% more light for umm...5% more yield? That's a different type of inefficiency, maybe it makes sense, maybe it doesn't. But thems the facts.
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Relax, what happen to be able to turn down even more? Remember one thing I'm not here to pick fights. I've been here since July 19, 2010. I don't have time for it anymore. I'm transparent and you are not. So please4 stop the tude my dude.
 
JorgeGonzales

JorgeGonzales

Well-Known Member
REALSTYLES said:
Relax, what happen to be able to turn down even more? Remember one thing I'm not here to pick fights. I've been here since July 19, 2010. I don't have time for it anymore. I'm transparent and you are not. So please4 stop the tude my dude.
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What attitude? I respectfully offered another point of view. No argument, just discussion.
 
Wisher2

Wisher2

Well-Known Member
how much of that is grow space and how is it actually laid out.......if it is seperated into sections or 4x4 stations ....or just 250sqft of grow like a big ass room you are just gonna stick a shit ton of plants in
 
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