It may be hard to know how they work, but the Marina Algae Magnet Cleaner makes a magnetic addition to your cleaning arsenal. This convenient accessory allows scrubbing of the inside glass while keeping your hands nice and dry. The non-abrasive pad won"t scratch your aquarium and leaves it squeaky clean. About Marina Dedicated to providing a wide variety of friendly and affordable aquarium products for all types of fish keeping, Marina’s extensive product line has something for every fish hobbyist. Newbies love the ease and convenience of Marina’s fish starter kits, and those with experience appreciate the reliable efficiency of their filters and heaters. A varied selection of colorful, creative decorations such as gravel, plants, and ornaments, provide a gorgeous underwater environment. A vast array of maintenance and breeding accessories are practical, reliable, and timesaving so you can spend more time enjoying your aquarium and less time cleaning it. * Perfect for freshwater and saltwater aquariums * Helps to clean inside without wetting your hands * Outside powerful magnets ensure a tight grip * Non-abrasive cleaning pads will not scratch the glass surface * Choose from your choice of sizes