Safe for Fish:Fish tank accessories is made of safe and durable resin, Fish tank accessories corrosion-resistant,Fish tank accessories artificially colored does not faded and fish tank accessories will not pollute water quality,Fish tank accessories no sharp edges design, Fish tank accessories very safe for your pet fish. "Divers" in a Fish Tank: Fish tank accessories will make the aquarium beautiful, Fish tank accessories is suitable for most aquarium landscapes,Fish tank accessories can help you observe the water flow direction of the fish tank,Fish tank accessories is the master of atmosphere in the tank. Adjustable Design: You can use the transparent wire to adjust the depth of fish tank decorations,Fish tank decorations floating ball can be opened, you can adjust water in the floating ball to control the speed of the float. How to Use: 1.Connect the fish tank accessories and the floating balls with fishing line; 2. Adjust the fishing line to a suitable length; 3. Rinse the dust on the surface of fish tank decorations with clean water; 4. Put fish tank decorations into water for use.