I moved, and changed tanks at the same time.

Hair algae
 

I had a problem with hair algae as I had inherited the tank from someone who lost interest. I did the water changes the new halide , introduced a algae team of crabs , lawnmower blenie and 2 tangs, Pulled algae from the rocks by hand, and I wasnt winning . I finally pulled out the rocks that were bad and scrubed them with a toothbrush and rinsed them with water change water in my kitchen sink. Took about a month of work as I would do 3-4 rocks a week. By the end of it my yellow tang finished the rest. And then he ate the zenia becuase I had no algae left.