2*2in1 QB288 with LM301B and 8pcs Cree XPE660nm

[alienfarts687]

Plus, mixing 4000k and 2700k is like having all 3500k pretty much.

Yeah, unless they're on separate channels that you can turn on/off or dim. I could see using only 4000k for veg with a little 2700k and then switching to 2700k with a bit of 4000k for flower.

[r2thk]

for this , I can't understand, you know, many clients request us make the boards with 2700k/4000k(half half).we have a idea want to make a individual boards(actucally, we have a design witth 7input for white, Blue,red,D.R,F.R,UVB)

[alienfarts687]

for this , I can't understand, you know, many clients request us make the boards with 2700k/4000k(half half).we have a idea want to make a individual boards(actucally, we have a design witth 7input for white, Blue,red,D.R,F.R,UVB)

To a certain extent, it will come down to personal preference and/or budget. Anyway, it looks like they are different channels on that last board, which would make a lot more sense to me.

For the budget conscious, a single lamp with just 3000k is a typical choice. Commercial growers are more likely to invest in multiple spectra that they can customise.

[r2thk]

Yes, we designed this boards for a Europe client, they make a professional growing lamp with a big housing and inside with 2 fans. looks beautiful

[Grower]

separate inputs is the only way to go.

White, royal blue, deep red, far red, uv

[Professor Xavier]

Different spectrum on different channels so we can control the light is definitely my preference as well. A light is a tool. The more control I have after meeting 1000+ PPFD efficiently and reliably, the better.

[r2thk]

new 6in1 288+8led combo kit, panel light size: 620*650mm Power: 600watt, customized color: LM301B 3000Kevin SK bin, RA:80, plus Cree 4pcs XPE660nm/4pcs XPE730nm

[r2thk]

New testing for 600watt Combo kit with 288led V2+, testing with HLG-600H-54B, color temperature 3000Kevin plus Cree 660nm. testing height: 12inch/18inch/24inch
PAR:42mW/cm2 PPFD:2008.306umol/m2/s @12inch
PAR:26.807/cm2 PPFD:1258.74umol/m2/s @18inch
PAR:20.456/cm2 PPFD:957.94umol/m2/s @24inch

[r2thk]

Hi Guys, how is if we just change the boards to LM561C S6, do you think is it popular for growing?

[DaveJonesFan]

Just an my observation. You are throwing a hell of a lot of stuff 'against the wall' and some of the R&D you are engaging in seems pedestrian for someone in the position of running or representing the company selling the stuff. Just throwing the data and graphs up without you yourself gaining in understanding of the craft here is a turn-off for me. Seems like a very different business culture that is permeating the west more because of Chinese cost advantage.

That last question posed is particularly troubling.

That said, yes the diode is and has been popular for growing.