I certainly don't have a massive outbreak of turf algae, but just enough to be irritating (Begins to grow up around zoa polyps, is in rock crevices, etc). In addition to 5 small fish, I have two tuxedo urchins and multiple hermit crabs in a 32 gallon cube as well as a variety of LPS/Soft corals. Tank is right at a year old, Nitrates stable 10-12 and phosphate stays 0.03-0.04. With it being a small nano tank, I'm not operating a refugium, algae scrubber, etc - just foam, chemipure, and standard cube filter and an ~ 20% water change weekly. I've heard pros and cons on adding an emerald crab to help with cleaning crew when it comes to them messing with fish and corals. Interested in everyones experience. Thanks in advance!