Hydrogen peroxide is a powerful oxidizer of all algae. If you can remove rock from tank, soak rock in a 10% bath of hydrogen peroxide for 10 minutes. If you can’t remove rock, then use a toothbrush dipped in peroxide concentrate and scrub it out. Dip toothbrush every 60 seconds. Hydrogen peroxide bath is an indiscriminate oxidizer that will kill pods, bristle worms mini stars. If sensitive corals are the rock, then soak for 5 minutes.
John Maloney from reef Cleaners says to get Urchins & Emerald Crabs.
https://www.reefcleaners.org/nuisance-algae-id-guide
What is known as "
Green Turf Algae" in the hobby is really a generic name given to hundreds of different species of macroalgae that describe certain similar characteristics. They are coarse, wiry, and generally have thicker wider blades than Green Hair Algae. They may or may not have a mat like root structure, sometimes they just seem to sprout from the rock.
Turf algae that sprouts directly from the rock can be a pain to control, as it is difficult if not impossible to pluck it all. Once discovered it should be treated outside of the aquarium, perhaps by dipping the affected rock or frag in water treated with an algaecide.Turf algae that grows with a "root" mat can be peeled by pushing down on the algae as you scrape your thumb against the rock dislodging it in one swoop. Let it get big enough so you have leverage. The 3reef member who removed this piece did it perfectly.
Clean up Crew members that will eat Green Turf Algae include inverts with considerable cutting power like urchins, chitons, and emerald crabs.
Turf Algae Eaters can be Found Here.
