Tropical’s Gel Formula foods are made of versatile gel with a quick, easy DIY preparation process. Choose the size and shape of the portions, with tons of feeding possibilities! Apply the gel to rocks, pour it into molds, or freeze it for unique feeding applications. Herring, insects, and marine invertebrates provide protein and vital fatty acids, with carotenoids, beta-glucan, and astaxanthin helping to intensify coloration and boost immune system health. The gel’s consistency resembles natural food, encouraging fish to feed.