Superman monti

[fancy_fish101]

My Superman monti is slowly getting algae on it. You can see the black spots of it. What should I do?

 

[T-J]

Algae won't grow on living tissue. That means that those areas on your coral are dead.
May want to watch it closely for a few days. Monitor parameters. If it continues to spread, maybe frag the coral to try and save it.