it´s not the red that makes the trouble here, you simply run out of blue in the mix.
Try this...
go to
http://www.bmlcustom.com/custom-led-strip/
place 6 warmwhite(3000K)
take a look at the spectrum and check the amount of blue -->10%
now add one red
check the spectrum again and the amount of blue --> 8%
repeat until blue is --> 5%
this is also the minimum blue, plants need. HPS has the same problem .
View attachment 3160074
Thanks for chiming in Guod.
Yeah, I have messed with that spectrum analyzer thing before. The thing is I cant get the ratios of 3000k to 660 630 450 right, there arent enough spots on the "bar" that you put your led choices on. If I put 7 3000k on there, I can put 1 660 on and be about right ratio wise for power but then I only would have half a dot worth of 450 blue and 630 red. Since I cant do half a dot worth of a wavelength to make the ratio proper I would then need to put 14 3000k circles on the bar, 2 660, 1 circle of 450 and 1 of 630 to be close ratio wise and there isnt enough spots for that.
Not sure if that makes any sense to you guys but it makes sense in my head.
That is true, might want to put a few blues in with your deep reds. I added Luxeon ES blue to my newest modules for the same reason.
View attachment 3160085
I based my R/B bars off of your recommendations for supplementing R/B when running large amounts of WW and the pic you just attached, I actually spent almost a half hour looking for that post with the pic yesterday before I finally found it. I am running my COBs harder than those on your fixture (more WW) and also added 1 more 450 on my R/B string. So theoretically if that ratio of WW to red and blue is working out fine for you without issues of bud stretch, then I should be good too I would think, since I would have more WW from running the COBs harder and 1 more blue in my fixture.
Edit: I forget how many of those red are 660 and how many are 630 on your fixture in the picture. Was it 3 630s 3 450s and the rest are 10 660?
If it is then ya my WW is running harder and I added same amount of 660, 1 more 450 and 1 more 630 on my R/B string.
BT, good question about the neutral white Vero 10s vs XML2 for vegging, I will look into that.
Thanks, I will be waiting for a spreadsheet or conclusion.