The Fins First L Large Gravel Vacuum is designed for aquariums with a tank capacity of 20-55 gallons. This vacuum comes with 2 hoses and 2 16-inch nozzles, making it easy to clean and maintain all water types in your fish tank. The brand Fins First is known for producing high-quality aquarium cleaning tools, and this gravel vacuum is no exception, providing efficient and effective maintenance for your aquatic environment.