Something I've read on other forums say that the full spectrum is not mainly used to improve growth. You can have a perfectly healthy and growing coral under just Blue and White LEDs. However, they pointed out that there are some other photosynthetic pigments in coral that will will peak at other light wavelengths. By giving those pigments the wavelength they peak at, they will supposedly show better color overall.
Not my opinion, just something I've read. I'm still trying to decide whether or not the Full spectrum is worth it for my next upgrade. Personally tho, I've had a few coral change color on me with my current T5s, some of them came from Blue/White LEDs, some of them came from T5s. So I'm not sure what to believe.
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