What type of algae is this?

[mattevo]

Really hard to remove. Not sure how to remove it from corals without damage.

 

[BristleWormHater]

Its either bryopsis or gha, could you take a photo in white light? I would recommend a peroxide dip for removing algae from coral. It can definitely be done for zoas, although I dont think clove polyps take peroxide very well.
Heres a good guide for peroxide dipping
https://humble.fish/community/threads/peroxide-dipping-guidelines-for-corals.4715/

 

[THE REEF WHISPER]

Hair algae how much are you feeding