Aquarium Chemicals Oase

The magnetic aquarium glass cleaner is ideal for cleaning glass up to 0.2 in. (5 mm) in thickness. Designed to remove algae and buildup in all the hard to reach places. Durable, nontoxic plastic will not rust (easy storage). If the two sections get separated the internal section will float to the top for easy retrieval. Allows for simple aquarium cleaning while keeping hands dry. Fresh and marine water compatible. | Oase Magnet Aquarium Glass Cleaner, 5 mm