Ok, what is the best way to eliminate hair algae? When I initially set this tank up, I had it it really bad. Since then, I got an RO/DI water filter (less garbage in, less garbage out) and am running Chemi-Pure Blue (it has some GFO in it) with the hopes to remove phosphate (food source for algae). It has gown down dramatically, however, I still have some. I plan to do a couple of water changes in the near future to help as well.
All of that being said, which crabs or other life can keep this at bay? This is a small tank, so open-ocean swimmer will not work for me.