Its crazy, the one side of it is looking better and better and the bleached side is still the same, no further bleaching... I've got a third Koralia 750 I normally use to mix saltwater, and I'm debating on adding it to the tank to see if the extra flow helps.
I really can't imagine it bleaching due to the light. It's at the same level as my other acro's. Maybe because its whitish blue?
Anyway, I'm not sure the 750 flow added with the other two 750's is going to be a good thing. I may just put it in temporarily and see what happens.