Lighting How much power is in my 4x4
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https://www.spectrumkingled.com/product/closet-case-100w-led-grow-light/ here's the specs what ya think??? Thanks for the link BigSmO going to [emoji102] at it now
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Welp putting my blurples on fleabay hahaha in all seriousness tho man some bad ass lights their for sure I love the efficiency we all want to lower our footprint while at the same time still getting great results and that's definitely achievable with the cobs as you have shown can't wait to get mine [emoji41][emoji41][emoji41]
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I read a lot of their description and why sk says there better than the rest. I agree and disagree. I like how they cut up epistar and brigelux. They continue to talk about binning which is done by Cree but don't mention model or bin of the leds they use. I'd assume if they used the best they would be talking about it. They refer to lumen a lot as well and most people know the saying lumens are for humans. That's the brightness to the human eye and not what's plants actually see and use.
They talk down about cobs as cramming lots of leds creates heat too. Correct that's why there are larger heatsinks but understand cobs and the ones I use specifically are made to run at wattages well above 200watts. They are run at 55 to achieve the most efficiency. The heatsinks are specifically designed to take away heat.
Now smaller leds which it seems like they are using confuses me. 5 watts was the max and recently we see others jumping to 10watts. I wonder how minimal leds packed in a board like they do is any different than I cob. I also wonder how they get such high wattages out of leds when no one else does due to the above facts. Just my quick 10 cents worth.
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What about 300 watt cobs plus kind K3 L600 together in a 4 x 4
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Sorry for the late reply. That's way to much light for that space. 300w is more than enough, nevermind what the kind puts out.
I and surely others use AutoCOBs as supplemental lighting. Presuming we are adding AutoCOBs to already good (enough until can afford a full upgrade) existing systems, how much light is too much, such as X watts per sq. ft.? How can we safely max out on light, if we don't have a PAR meter?
One space I have 450watts of cobs at 30" over a 4x4 and the plants always have problems. Light stress, sun burnt, calcium deficient, purple stems. Now I also have 220 cob watts at 12" over another 4x4 the growth is phenomenal and healthy.
Assuming 50% efficiency on the cobs and 20% on the kind. 300w of cobs and 320 watts of kind your at 214 par watts. I think this is to high for autos. Another thing to remember is my 450 watts is using reflectors. With the autocobs they increase the intensity by 20%. So there are a lot of variables.
To answer your question without all the math I think 300 cob watts for a 4x4 would be best. Maybe a little more or less but from my own experience that's probably the upper level. To equal 300 cob watts with kind you would need the xl1000 kind which is 157 par watts. The 600 kind is not enough in its own.
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