Are Red and Green Channels Really Important?

[Rovert]

For the most part, references I see about best spectrum for Coral growth and coloration point to a strong bias in the blue range with some white (wide spectrum) to please the eye. What would happen if I were to zero out the red and green channels?

IOW, are red and green really important?

Current configuration:
2x Photon V2 32" (10% deep red / 5% green / 30%-70% royal blue / 10%-30% white / 30%-70% cool blue / 30-70% violet)
2x Kessil A360X (installing now, planning to dial to whiter bias, awaiting wifi dingle and link cable to control via app)

 

[Vested]

 

[Vested]

Imo if you’re looking for growth you need to provide a full spectrum (yes red and green are important), color is a whole different rabbit hole.

 

[Bpb]

This is always such a tough subject. You’ll get a ton of good and some not so good advice and everyone will swear they are correct. Most of us haven’t even begun to scratch the surface of real coral anatomy and physiology.

I am in support of providing as full of spectrum as possible. There is a good bit of data out there showing a little red goes a long way. But that’s about the extent of a conclusion we can draw. Run your lights how you think they look good. Manufacturers have gotten better at making it hard to mess up. Most problems happen with wide and rapid changes. Not absolute running percentages. I run a similar light setup to you