Emerald Crab Common Black Sea Urchin Recommended level: 360 – 420

Recommended level: 360 – 420 mg/l (ppm)

Maintaining a correct magnesium concentration is therefore very important and is indirectly responsible for fast coral and calcareous algae growth by making it possible to maintain correct calcium and alkalinity figures

and organic waste degradation in

eradicating both the anemone and planulas

Emerald Crab Common Black Sea Urchin Recommended level: 360 – 420The Green Emerald Crab (Mithraculus sculptus) is a popular addition to marine aquariums, valued for its vibrant coloration and algae eating habits. Native to the Caribbean Sea and the Gulf of Mexico, this species is generally considered reef safe, though occasional reports suggest they may consume small fish or corals if not adequately fed. Essential Information: Common Names: Green Emerald Crab, Emerald Crab, Green Clinging Crab Scientific Name: