Code: AQ11142Made with fresh kelp and spirulina, DelicaSea Algae Discs are ideal for all grazing bottom feeders, both freshwater and marine. The fresh kelp is harvested from along the rugged shoreline of Southeast Alaska. Loaded with essential minerals and nutrients, this same kelp is also harvested for human consumption. You will notice that the colour of this sinking disc is a much richer green than other comparable products. This is because they don't skimp on the good stuff! Suitable for all herbivorous catfish 56g