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I just pulled down my first harvest under 3000w of COB LED. It simply crushed my HPS runs in every way, including yield for damn near the same wattage. Quality was much much better than what I have grown previously with the same strains and same conditions. HID can't compare if you do it right...

Sorry, but I don't really know what you are referring too. And that quote was taken out of context. What am I wrong about again?

I'd think CXB3590 @ 50w each would be a bit excessive in a space that small. 60cm is just just shy of 2'. Just a thought, as I've only personal experience with CXA3070 and Vero 29.

So the Voltage output is the capable range of the driver. Since it is a CC driver (Contant Current), the Amperage will stay the same at 700ma (.7A). You can "load" the driver running as many LEDs as you can at .7A, as long as you don't exceed the Voltage output range. This driver has an...

A little old but this is kinda relative... https://www.rollitup.org/t/kingbrite-rocks.866244/page-20

Light density at Depth?? Also, if you are looking for higher light levels in the lower canopy, there is no substitute for good pruning. Regardless of the light source. I would also recommend optics to focus the light into tighter beams, thus creating higher light density at depth.

Cool man, no worries. Just clarifying.

Efficiency goes down the harder they are driven. The idea behind running COB's softly is that they still put out a lot of light for lower current draws. Many softer driven COB's will give more light, better coverage, and deeper canopy penetration when compared to fewer COB's driven at a higher...

Who said anything about creating all the IR associated with black body radiation? As @hillbill said, we are hoping for a hypothetical "daylight" spectrum from a future horticultural based COB, within the PAR range. Efficiency of LEDs will contine to improve as technology progresses. EDIT: as...

Such BS about the guardian product! We had to pull all their product from our shelves too. The cannabis industry is unfortunately full of shady motherfuckers!

Give a man a salad...

Agreed.

You are referring to a vast majority of the grow industry. Most people outside of this forum have never heard the term COB before and think of disco lights as led grow lights. COB's are: Superior technology.. Absolutely In mainstream press... Not so much. When COB fixtures are advertised in...

I think everybody needs to give this a good read through... https://en.wikipedia.org/wiki/Reflection_(physics)

I find PAR readings to be especially useful when we already know the spectral distribution of the light being emitted. If we know what the SPD looks like, we can make comparisons using relative intensity. IME, if two light sources have the same output/intensity, the light with the fuller...

Different watt consumption yes.. But if you calculate PAR/Watts, the SK has an average of 27.82 PAR/Watt @ 24" (based on my measurements) compared to the LEC which has an average of 22.29 PAR/Watt @ 24". I think they just wanted everybody to believe that they were somehow lightyears ahead of...

BTW, I don't really support Spectrum King as a company or agree with how they practice business. But the product ain't bad... :EDIT: I will also say SK recommends their product hang 18"-24" above the canopy. I have the 18" data as well.. If anybody was interested in seeing that then let me...

Yes, actually I myself have tested these two lights head to head with a PAR meter. I work at a grow store and we have both the SK400+ 90 deg. and a Sun Systems LEC 315 hanging on display. The light performs just as the company claims. It's a great product compared to most other big name...

Albeit more expensive upfront, the SK400+ outperforms LEC/CMH/CDM per PAR Watt, and overall has quite a bit more output than the Philip's 315 bulbs. The Spectrum is also much fuller and tailored for flowering plants.

Thanks a lot! :joint: