Macroalgae Pack Chaetomorpha + Red Gracilaria for Saltwater Reef Fish Tank Aquarium Refugium Care Level: Moderate | Size: 2 (4oz) Bunches Great For: Refugiums, Tangs, Angels, Copepods/Amphipods Compatibility: Completely Safe with all Fish & Inverts 100% Live Arrival Guarantee. See Description for details Orders over $149 Receive Free Shipping. Build your order from our store and save.