Two Little Fishies SeaVeggies Suction Cup Algae Clip A unique plastic clip with a large suction cup that securely holds Julian Sprung's SeaVeggies and other algae with a powerful grip. Attaches easily and holds firmly to the aquarium glass/acrylic. Unlike most clips, this one floats, so it is easy to retrieve and won't get lost in aquarium decorations. No metal parts so its safe for fish, plants, and won't cause any scratches to the aquarium glass/acrylic. For marine & freshwater aquariums.