Feature: 1. The joint can be disassembled. If the water change process is blocked carelessly, it can be disassembled and cleaned. 2. Soft rubber anti-retrograde tablet, anti-regurgitation effect is better. 3. Special balloon for the aquarium, feel comfortable, seconds water. 4. The design of protective net cover can prevent the inhalation of small fish and shrimp in the process of changing water. 5. Suitable for fish tank, aquarium. Specification: Item type: Water Changer Material: ABSColor: As picture shownOptions: C300, C600 v\:* {behavior:url( default VML);} o\:* {behavior:url( default VML);} x\:* {behavior:url( default VML);} .shape {behavior:url( default VML);} Type Hard pipe outer diameter(mm/in) Hard pipe inner diameter(mm/in) Soft pipe outer diameter(mm/in) Soft pipe inner diameter(mm/in) Suitable fish tank size C-300 10/0.4 8/0.3 12/0.5 9/0.4 Suitable for small and medium-sized fish tank of 60CM and below. C-600 13/0.5 10/0.4 16/0.6 12/0.5 Suitable for medium and large fish tanks above 60CM Instructions: 1. Assemble the water changer; 2. Put one end of the water changer into the fish tank, and put the other end into the bucket. Press the balloon a few times to change the water. Package List: 2 x hardpipe1 x soft pipe1 x balloon1 x water outlet1 x connecting tube1 x protective cover1 x suction cup1 x fixing clip Note: During use, the water changer can be fixed on the fish tank by the suction cup and the fixed clamp. It is more labor-saving to change the water.