AlgaeFree Tiger Shark Algae MagnetCleaner / Scraper.
The Tiger Shark Float is the largest floating magnet available! It has a floating inner assembly and a large 4" x 2" cleaning area for the big job of larger tanks. Its floating inner assembly will float to the surface if disengaged for easy retrieval. * Floating * This cleaning magnets is for use on glass and acrylic aquariums 5/8" and 3/4" thick. * Glass Aquariums: 200-350 gallons * Acrylic Aquariums: 72" long and 36" high, 96" long and 30" high, 120" long and 24" high