Information about AQQA Aquarium Magnetic Cleaner Brush
STRONG MAGNETIC : Made of strong rare earth magnet, durable and convenient. Stronger and more powerful magnetic force. Just move the outer magnet, the inside magnet follows, cleaning the floating algae faster and easier. Size Medium suitable for fish tanks with thickness of 1/4 "-3/8 ", 
FLOATING DESIGN: The internal floating avoids the brush sinking in the bottom of aquarium. It floats in water and never sinks to the bottom of the tank if separating, makes it convenient to take it out of the tank 
ALGAE SCRAPER: Install a sharp blade as algae scraper in the head of the brush, which easily removes stubborn marks, even if around corners. The inside anti-scratch cleaning pads cleans fast and efficiently without scratching the aquarium glass 
2 DETACHABLE BLADES: Equipped with two blades that can be used in different types of fish tanks, one is stainless steel blade and the other is plastic. Scrape hard algae or mineral deposits on glass aquariums and remove natural sediments on acrylic aquariums 
MULTI-PURPOSE USAGE: Aquarium glass cleaning brush can be used not only in the aquarium, but also for cleaning windows, glass doors and other glass or various fish tanks that will not be demagnetized, such as acrylic, glass or plastic