San Francisco Bay Brand seaweed salad is made from 100 percent natural dried macro algae. It supplies an excellent source of vegetable protein, vitamins, amino acids and natural pigments. The herbivorous fish will also digest it much more completely than foods derived from "land-based" vegetables, like lettuce. It is a perfect natural treat for all fresh and salt omnivores. It contains High levels of protein, fiber, iodine, carotene, vitamins A, B and C1, calcium and iron. No fillers or additives are added. Tear or cut off a piece of salad approximately 3-inch by 3-inch using a vegetable clip, place inside aquarium in an area easily accessible for fish. The fish will graze at their leisure. Remove all uneaten seaweed after 6-8 hours. Includes 4 units in a 12-gram pack.