Coraline bleaching WTF?
 

all parameters in order coraline algae doing great ...add red sea abc then BAM coraline all white anyone have this problem?

Check the coraline closely for biofilm or other types of algae coating it.

zippo clean and clear

First time Ive used this product kalk only before...

Lighting differant?

nope

Sorry I'm not sure what it is,sounds like some sort of malnutrition.are you running chaeto in your sump or any other macroalgae?

do you know what your big three are at? (Ca, Mg and DKH)....product caused a spike perhaps?