Description: It is solid, durable and washable with plenty micro bubbles. Good for guppy, shrimp, and all kinds of aqua creatures. Help to creates water currents and simulation underwater scenes. Create lots of small,tiny bubbles,suitable for aquarium,fish tank and circulation system. Soak the product in water for 2 hours before using. Specification: Material: Nanomaterials Shape: round Diameter: 105mm/4.13inch Thickness: 20mm/0.79inch Power: 8-10W Package Includes: 1 Piece Air Stone Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the size above. Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color tone of the pictures and the actual item
