The Feeding Frenzy Seaweed Clip is an excellent tool for feeding the SEAWEED SELECTS, a dried macro algae, from Ocean Nutrition. The clip is designed for underwater use and has a suction cup for attachment to the inside surface of the aquarium glass or acrylic tank. The clip holds the seaweed for fish to graze upon and helps promote a natural feeding behavior. Product Features Water proof with suction cup for in tank feeding Tighter grip zone for better hold For feeding marine or freshwater tropical fish Perfect for vacation feeding Recommended for use with Seaweed Selects products.