The Derasa Clam (BIOTA) is a valued clean‑up‑crew addition sold in‑store here in Columbus, Ohio. It acts as a scavenger and algae picker, keeps substrate clean, helping reduce maintenance and improve water quality. Stock 1–2 per 5 gal in a balanced reef or fish‑only system for best results. Difficulty: Easy. Offer varied empty shells. Drip‑acclimate and maintain stable salinity for long‑term health.
