Optimal food source for all species of Marine Tangs, Angels, Wrasses, Damsels, and some Butterfly Fish. Brown Marine algae is a nutritious supplement for all grazing fish, rich in vitamin C, and is 100% digestible. Feeding Recommendation: Tear off a piece of seaweed approximately 2 inches by 3 inches (for the average 55 gallon community tank) and place in the aquarium using Feeding Frenzy Seaweed Clips, or attach seaweed to an aquarium rock using a rubber band or other practical technique. (Folding the seaweed piece prior to placement is recommended.) Allow fish to graze at their leisure. Any large seaweed pieces that break loose and float to the surface should be reattached. After six hours remove any uneaten seaweed. Brown Marine Algae is an excellent vacation food! Ingredients: 100% natural dried seaweeds (marine micro-algae). Guaranteed Analysis: Crude Protein (min) 35% Crude Fat (min) 0% Crude Fiber (max) 10% Moisture (max) 4%