Description:This water changer makes use of siphon effect, with it you can change water in the tank, remove and gravel effortless. You don't need to spoon up water any more, suitable for small sized aquarium.Features:Special tube head design makes it easy to change the water at the aquarium manually.Put the tube head immersed into the water, move up and down to produce pressure in the tube, then the water will automatically through the pipe due to the siphon effect.The soft long pipe is made of PVC, eco-friendly, and flexible.Suitable for small sized aquarium.To change water, clean up small gravel and remove at ease.Specifications:Condition: Brand NewMaterial: PVCColor: as Shown in the PictureFit for: Small sized tankTube Head(L x Diam.): approx. 17.4 x 2.8cm / 6.85 x 1.10inLong Pipe Length: approx. 150cm / 59.06inWeight: approx. 88gPackage Included:1 x Long Pipe1 x Tube HeadSteps:1. Put the tube head immersed into the water.2. Move up and down to produce pressure in the tube.3. The water will automatically through the pipe due to the siphon effect.