Iodine-rich flake food with tasty morsels. sera GVG-Mix consists of 80 % special flakes made from marine algae, ground krill and plankton. 20 % are FD bloodworms, Daphnia and Artemia shrimps. This iodine-rich food prevents diseases of the thyroid gland and thus should be fed at least once a week. Sera GVG-mix is especially suitable for community aquariums which are mainly stocked with live-bearing tooth carps, and for saltwater fish.