2 articles
Clean-up crew (reef aquarium)
Clean-up crew (CUC), reef aquarium team of snails, hermit crabs, shrimp, and urchins that grazes algae and scavenges detritus. Modern stocking is about one grazing snail per 5 gallons, added after cycling, not one per gallon.
Marine and reef aquarium snails
Marine and reef aquarium snails, the cleanup crew (CUC) gastropods Nassarius, Astraea, Trochus, Cerith, and Turbo, are reef-safe algae and detritus eaters chosen by function, stocked by tank size, and maintained by restocking.