A couple quick questions

[Clowns-corals-cats]

I noticed some yellow on my forest fire montipora digitatas skeleton. Im thinking algae maybe? Also noticed some bleaching on the back side of my stylaphora didn't notice sooner cause the coral is growing with full polyp extension everywhere else. Is this probably a flow issue? Can I save them by increasing flow and adding flow in other directions? Also I got a plating montipora a week ago and a corner of it is brownish black is this just healing from being Fragged? I got it cause I've saved corals before I don't know what's going on.

 

[KrisReef]

Could be but it’s not always the cure that quickly happens in my limited experience.