hold & press the button: the aquarium water tank cleaner is light and convenient; Easy operation with one hand. The air pressure button has greater suction. For cleaning and drainage, first connect the air inlet pipe and outlet pipe, squeeze the air pressure by hand to generate a siphon, and the water will automatically start to flow into the bucket. multi function: water change, sand washing and decontamination. The upgraded fish tank cleaner is simple and easy to use, which can effectively and quickly absorb dirt such as gravel and fish feces, and complete the daily water change of the fish tank. perfect for aquarium cleaning or quick on-site maintenance. integrated gravel and fish filter: the Aquarium Gravel cleaning tool kit has a gravel filter basket in the outlet pipe (installed, no need to be installed again) to avoid being blocked by gravel. It can not only effectively separate and remove the debris of the water tank, but also protect fish and shrimp from being sucked into the aquarium extended water inlet and outlet: equipped with 2 water inlets, the length of water pipe can be improved through pipe connector. The long water outlet hose is made of high-quality flexible PVC plastic, which can long-term use, will not be folded to block the water flow, will not be too hard, and is easy to mix to any position for use. Note that the outlet must be at least 20 inches (about 50.8 cm) the inlet. Colour:Transparent + black Material:plastic Package Contents: 1 x air pressure button 1 x valve 1 x filter basket 1 x water outlet hose 1 x water inlet pipe 1 x fixing clip 1 x water flow clip 1 x pipe connector 1 x glass scraper Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.