The COOSPIDER Aquarium U-V Filter Green Clean Machine is designed for fish tanks ranging from 40 to 100 gallons. This submersible filter is suitable for all water types and is located internally within the tank. The brand COOSPIDER specializes in aquarium equipment, providing efficient filtration solutions for maintaining a clean and healthy aquatic environment. The U-V feature helps to eliminate harmful bacteria and algae, ensuring the water quality is optimal for your fish and other aquatic inhabitants.