Aquarium: This device cleans glass by magnetizing from the outer pad to the inner glass cleaner section to quickly and easily clean algae growth, keeping your aquarium healthy and looking its best. PREMIUM QUALITY: The brush surface is made of fabric with small hooks to scrape off algae without damaging the glass. On the outside, the handle surface is covered with felt, so it glides smoothly when cleaning. COMFORTABLE AND ANTI-SLIP: Its long and wide rod shape makes it easy to reach, a big thick handle makes it easy to hold when you move, and the non-slip handle is also very convenient. FLOATING AND EASY TO STORAGE: It floats so you don't have to worry about it sinking to the bottom of the sink, and you can retrieve it without getting your hands wet or disturbing any aquatic animals or plants. Simple and Durable: Made of waterproof plastic to protect the magnet from rusting. Because of the way the fabric attaches, you don't have to worry about sand or matrix getting stuck on the fibers and scratching the glass while cleaning. Durability is also very good and can be used for a long time.