I'm surprised you would find 65K bulbs yellow.., with CRI 85 (ge ecolux) I used I always found it very crisp which Is why interspersed Sylvania grolux in between to keep visible lumens down and see p my loaches less irradiated
Tubes are different..
Current ones use RGB phosphors. LED's use a yellow phosphor w/ blue emitter..
might as well mention the issue w/ CRI first:
Same CRI can look completely different since it's an average of at least 8 samples..
One of the reasons I always lean high CRI for LED.. eliminates that possibility..for the most part.
Good thing is like early florescent the market is "learning" about color tints in LED's
All four strings can be dimmed separately, so I hope I can find a setting that appeals to me. If that does not work out, I will change the 3500K with blues.
You'll need the 3500k's for sunset/sunrise.. IF you want that..
None of the other combos left really do it justice though 4000K isn't bad..
Besides 3500k is red rich with usually a smidge of red phosphor..
Though there is no real "right" answer..I'd consider changing out the 4000k's for something like 8000k or luxeon 6500k's..
for fun led vs tube vs plant action spectrum