Yellow Colony Polyps for Saltwater Reef Fish Tank Aquarium Live Coral Care Level: Very Easy | Size: 1-2 inches; About 10-12 Polyps Recommend: Min. Tank Size 5 Gallons Compatibility: Completely Safe with all Fish & Coral 100% Live Arrival Guarantee. See Description for details Orders over $149 Receive Free Shipping. Build your order from our store and save.