Smaller, more frequent water changes are imperative to the health of your fish. Without regular water changes, invisible toxins can build up in your aquarium creating a hazardous environment for its inhabitants. This product is a complete ready-to-use system which adapts easily to most faucets and makes water changes a breeze. It drains as well as fills aquariums, and will not disturb fish or decor during routine aquarium maintenance. <br><br>Features:<br>High quality, easy and simple to install and operate.<br>Humanized jitter design, use more conveniently and effectively.<br>Water outlet valve design for controlling the output freely when change water.<br>Clean the gravel at the same time, pump out sediments and residual fodder.<br>Good for aquarium maintenance with no buckets, no siphons, no mess, no tank tear downs-ever again.<br><br>Specifications:<br>Size: M / L(Optional)<br>Total Length: M: 2.4m/8ft; L: 2.7m/9ft<br>Hose Length: M: 2m; L: 2.3m<br>Hose Inner Dia.: M: 12mm; L: 16mm<br>Hose External Dia.: M: 15mm; L: 20mm<br>Suction Tube(L*Dia.): M: 2 * (15.5 * 4.2cm); L: 2 * (18 * 5.2cm)<br>Suitable Tank: M: &lt;80cm; L: &gt;80cm<br>Package Size: 34 * 31 * 8.5cm<br>Package Weight: M: 413g; L: 718g<br><br>Package List:<br>1 * Aquarium Water Change Cleaner Set