As with the Ocean Nutrition Green Marine Algae, the brown marine algae is ideal as a supplement to the food source you already use for your fish. It is also worth considering as a holiday food and can be used by attaching to feeding clips or folding the seaweed around an elastic band. It is recommended that you use a 2 inch by 3 inch piece in a community aquarium of 55 Gallons. It is also advised that if any pieces of the seaweed become loose and float to the surface then they should be re attached to the elastic band and also if the seaweed is left over 6 hours then it should be scooped out and discarded. The Brown Marine Algae is suitable for :- Marine Tangs, Angels, Wrasses, Damsels and some Butterfly Fish. Ingredients:- 100% Dried Seaweeds, 100% Digestible and rich in vitamin C. 50 sheet bulk pack, each sheet approx. 20cm x 20cm. Approximate total weight per pack 180 grams.