The Emerald Crab is a valued clean‑up‑crew addition sold in‑store here in Columbus, Ohio. It acts as a bubble‑ and hair‑algae‑eating crab, helping reduce maintenance and improve water quality. Stock 1 per 20 gal in a balanced reef or fish‑only system for best results. Difficulty: Easy. Feed nori to deter coral nipping. Drip‑acclimate and maintain stable salinity for long‑term health.
