Aquarium cleaner: help you clean floating algae more easily and quickly Super Magnetic Material: Powerful suction force, less time spent, more energy saved when cleaning the fish tank Floating Design: Applied to the inner surface of the glass,Clear the water difficult to remove attachments,avoid accidentally dropping into the water tank, not suitable to take Scope of Application: Applicable to all kinds fishbowl of size 50-80cm, glass thickness less than 8mm Anti-Slippery Wristband: Non-slip handle increases friction with the hand, to facilitate cleaning Specification: Net weight: 150g M - Approx 93 X 44 X 73mm Material: Magnet, elastic Notice: Please measure the thickness of your fish tank before purchasing. Contents: 1Ă—M Magnetic Cleaning Brush