Lifegard 4" x 6" Blue Algae Scrub Pad for Glass Aquarium

Surface friendly Algae Scrub Pads are safe, non-toxic and easy to use for removing line scum, unsightly algae and other deposits that form on aquarium surface. Available in two convenient sizes: 3"x 3" and 4" x 6" Blue for Glass Aqauriums and White for Acrylic.