Algae Scrub Pads for convenient aquarium maintenance Scrub away algae and buildup from aquarium surfaces Algae Scrub Pads available for acrylic or glass aquarium. Use these handy, durable pads to remove water line scum, algae, and other forms of buildup on aquarium surfaces. Long-lasing and nontoxic Algae Scrub Pads are available for both glass and acrylic aquariums