Corals becoming pastel color?

[kole]

the low phos and nitrates will cause this to happen. I am seeing it happen in my tank now because I am keeping low levels to fight off a GHA problem. Feed more.

[MarkoD]

I do feed my corals. I just adjusted the lights to be bluer. Running leds

[reefwars]

Try feeding later at night or in the morn while its still dark , I'd also lower the intensity of your leds wont hurt anything

[asylumdown]

My corals are pretty pastel from having low nutrients in the water. undetectable nitrates and 0.02 phosphate is pretty low. Is there any algae of any kind growing in your tank? If you've got super clean looking rocks and no macro algae of any kind, or if the growth rate of your algaes has declined significantly recently, it's a good chance the issue is nutrients.