Quote Originally Posted by Pedro de Pacas
Question, how critical is the LED wavelength? If I add a PAR38 LED spotlight rated at 665 -670nm is it useless? Ditto if I'd like supplemental Blue, if the light is rated at 455nm rather than 445nm, is it useless?

Just wondering...
As long as you're pushing from 420-470nm blue and 630-670nm red you're hitting the high peaks and doing fine. Given what you've said about the panel, supplement with more blue, please.