the effects of cyan/green

Has anyone done any research or actual grows with green or cyan leds? I have a bunch of 5w cyans laying around and they are obviously heavy in the blue and green spectrum.
we all know the old thinking of red/blue are only what you need any green is useless is long gone but has anyone actually grown with it?

I'm thinking of adding a two 5 watts so actual draw would be around 7 watts to my little 50watt custom xte, xpe clone and seedling light.

Should I just add them or place a divider up and put them on one half and run the other half how I always do.


p.s I've got the new cree photo red 670nm TOP BIN on stars if interested. But anyway what do you all think about the cyan?

Waste of electric.

I use green led to work in my rooms in the dark without interruption to the dark cycle.

I'm with @Yodaweed wasted electricity.

What about the carotenoids that take up green wavelengths

There are articles out from universities stating how once you hit a certain irradiance of other wavelengths green becomes important for availability, also that green has its own affects on growth. Green by itself may not do enough for PS, but enough studies have been posted for me to wait till lights come on for now, till green is 100% useless by itself.

I think of green/cyan as calibration wavelengths.

Red and blue are absorbed in the top layer of canopy, leaving colors like amber and cyan for the lower levels.

Cyan will provide a small amount of food for lower branches, but will also cause their %Pfr to converge a lot lower than the top canopy level. Without "bad" colors, lower branches won't know they're being shaded, and they won't have any food to stretch free.

This is the reason I think white LED users are so successful. Wide band light has a calibrating effect.

The transmittance of 500nm cyan through a green leaf is very little, on the order of 5%. This means it does not have the penetrating power of green or yellow. Neither does it hit the phototropins like blue does (for all the blue light mediated responses). Cyan is basically the most worthless color in the spectrum. And cyan LEDs have the worst efficiency, so yeah it is a waste of electricity.

What would be interesting is if a regular royal blue LED were covered with green phosphor. This would look cyan too, but it would be not monochromatic. With additional red LEDs this could be the most efficient white light source that uses current technology.