What is this?

[GrumpyReefer]

This is growing on my zoas and they are not happy. Is this hair algae? If so what's the best way to get it off the zoas?

 

[kevgib67]

If it is hair algae add 2/3 tank water to 1/3 3% hydrogen peroxide and place plug in for 3-4 minutes. That’s how I did it I’ve read of doing it for 2 minutes in 100% hydrogen peroxide. It did not harm my zoas and they were open and happy shortly after.

 

[GrumpyReefer]

Thanks I will give it a try.