abrazo CeraKlar Aquarium - creates a clear view of the aquarium CeraKlar AQUARIUM is a special sponge for perfect cleaning of glass panes in freshwater aquariums and terrariums. This is how CeraKlar AQUARIUM works: ... the finest microfibers gently and safely remove algae, stuck dirt and stubborn stains ... rust-free and without chemicals — therefore harmless to animals and plants ... The “razor blade effect” of steel wool is guaranteed to be scratch-free on all lenses ... particularly handy and reusable ... Made in Germany 8 packs 16 pieces