The Dr. Tims Aquatics Bene-FISH-al Seaweed Grinder Fish Food Enhancement is a high-quality product that is designed to improve the feeding time for your fish and corals. This product is made with a blend of seaweed that is designed to provide a healthy diet for your fish and corals. The Dr. Tims Aquatics Bene-FISH-al Seaweed Grinder Fish Food Enhancement is available in two different sizes. The smaller size is perfect for small fish tanks or marine aquariums. The larger size is ideal for large fish tanks or marine aquariums.