Algae on frag concern or not?

[kylemc447]

newbie back hopping in the hobby after 12 years so forgive the green-ness - you forget a lot lol. Have this algae on one of my frags that seems to be spreading to nearby ones. Can you help ID and advise if a concern or not. Many thanks in advance!

 

[kylemc447]

Little better photo. Sorry blues are on now. The night photo - was tonight just tried taking better one now.

 

[MikeReefs]

Looks like GHA. Up your clean up crew they should eat it and keep it at minimum. GHA only becomes a problem when they cover the frags and block it from getting light. Make sure your parameters are not out of hand and feeding your algea

 

[kylemc447]

Thanks mate

 

[Mr. Mojo Rising]

For a zoa I would dip the frag in hydrogen peroxide water (I use 50/50 mix), it will kill the algae, the zoa will recover after a few days.

 

[exnisstech]

For a zoa I would dip the frag in hydrogen peroxide water (I use 50/50 mix), it will kill the algae, the zoa will recover after a few days.