Hair algae on my zoas

[Sidepipes]

Have some hair algae on my zoas. How can I fix this? Just changed from instant ocean to Aquavitro Salinity salt. What a world of difference. Just changed yesterday, but this hair algae has been on it for a while.

 

[A. grandis]

Hair algae means nutrients in the water.
You've got some cyanobacteria too!!

Try:
Feed less, specially liquid foods and frozen.
Make sure your tap water is good, RO?DI?
You can use GAC to help.
Remove detritus from the system
Test for nitrates and phosphates and see where you're at. Undetectable would be your goal to eliminate those algae.
Herbivores in the system (snails and fishes).
It take a while to eliminate them, specially if the system is young. Don't give up!
Good luck!

Grandis.