Easy to Use: the outside, the inside can be moved and cleaned, while cleaning the outside Comfortable Environment: Fish can growed in a clean fishtank Stable and Safe: Suction is not afraid of falling, it easier to clean the fishtank, antiscratch cleaning pad Will not scratch the glass Craft of, which is environment friend and durability Effective: Good absorb ability and powerful attraction, suitable for fishtanks within 50cm and with a thickness of glass less than 6mm, which can effectively the algae adsorbed in the aquarium, not need to worry about soiling hand