Check the listing for details. Algae Free Great White Plus Magnetic Aquarium Scraper Tank Cleaner. Condition: New. Listed at 169.99 USD. Be confident in your purchase, we are a Certified Algae Free Dealer, how cool is that?!? The new "Plus Series" has a detachable and replaceable scraper blade for glass (stainless steel) or acrylic (plastic) aquariums and will make algae cleaning quick and easy. Our cleaning magnets are made with Neodymium Rare Earth Magnets, one of the strongest magnets in the world! Algae Free LLC don't use surplus magnets -- only new. All of our cleaners are made of the finest, safest and most cost-effective materials available. The outer magnet assembly is handcrafted in the USA. Strong, high-quality neodymium rare earth magnetsReplaceable scraper blades for glass and Acrylic aquariumsReplaceable inner scrubbing pad with nontoxic adhesive backingReplaceable felt pads for the outer cleaning assemblyFloating interior magnet assembly (except Great White models)Inner assembly is non-toxic and can be left inside tank all the time -- it will not rust!Can be used on all glass aquariumsAcrylic-safe inner scrubbing pads make it ultra safe to use on acrylic aquariumsCan be used in fresh and salt waterDecorative finish that becomes part of your aquariumLimited 2-year warranty on material and production defectsFitment: The Great White (Non-floating) is Algae Free’s most powerful magnetic cleaner. It has the same cleaning area as the Tiger Shark Float but is much stronger.Glass aquariums holding 300 to 600 gallonsAcrylic aquariums up to 96" long and 36" highLarge 4" x 2" cleaning area