Hydrogen Peroxide - Is it safe to Dip Montipora (Superman, Sunset) for Algae Removal?

So I had Hair Algae in the Past on some Zoanthid Frags and read somewhere that you could give it a quick dip in Hydrogen Peroxide and in a Few Days the Algae would be gone and you are left with a Nice Clean White Frag Plug.



It did work with great success for me in the past with Zoanthids.



But when reading about that they said you cannot dip some Corals in Hydrogen Peroxide because it will Kill them.



But I do not remember which Corals were safe to Dip with Hydrogen Peroxide.



Now I have Algae on some Montipora Frags (Sunset, Poker Star, Rainbow, Superman, Chili Pepper, Undata, Season's Greetings).



Can I dip those in Hydrogen Peroxide Safely?



Also, How long can you do the Dip for?



If I remember correctly people said anywhere from 30 Seconds to 5 Minutes.



So I did 30 Seconds to be on the Safe Side.



How long do you guys Dip Corals for in Hydrogen Peroxide?