NP pellets and bleaching events

[Rogue951]

I'm using about a cup in my 60 gallon (by volume, 40 display) and the only coral that I've had bleach, though not confirmed from pellets, is my duncan colony. turned white then a while later back to it's peachy skin and green mouths.

Also have noticed while Algae isn't dying, it is not spreading on my rocks, just where it's already growing.