DESC: Hikari Tropical Algae Wafers were specifically developed for the hard to feed plecostomus and other algae eating bottom feeders. Hikari was the originator of this diet, now copied by many. Contains high levels of vegetable matter that algae eaters prefer and love. High in stabilized vitamin C to reduce stress and build immunity to disease. Complete and balanced nutrition. Unique disc shape allows easy access. Will not dissolve nor cloud the water. Great for saltwater fish too.