_x000D_ Auto Aquarium Water Changer Kit Power Free Fish Tank Float Ball Valve Type Auto Water Filler Water Level Controller For Adding Water(1/4 inch Tube Male) _x000D_ Package Including: 1 x Automatic Aquarium Water Changer Kit Material: Plastic, Acrylic Color: White Suitable Water Level Range: 0.5 to 15 cm Float Ball Valve Size: 4.0*5.6 cm/ 1.57*2.21 inch Fish Tank Clamp Size: Length: 8.3cm/ 3.26 inch, Groove Thickness: 1.7 cm/ 0.67 inch _x000D_ _x000D_ _x000D_ _x000D_ NO POWER OR PUMP: _x000D_ The fish tank water changer features fully automatic start and stopping, no electricity is needed. suitable for low pressure gravity feeding systems, leak-free operation is achieved by hand tightening _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ WIDE APPLICATION: _x000D_ The aquarium water adding device can be used to replenish fresh water in fish tanks and improve fish living environment. Suitable for ponds, chickens, livestock sinks, aquariums, Aquaponics, aquaculture, hydroponic tank reservoirs _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ FLOAT VALVE: _x000D_ The adjustment shaft adopts engineering plastic instead of metal screw, and you don't need to worry about corrosion. You can adjust the ideal angle by hands and no extra tool. The water level controller can work with water purifier and normal water bucket, a superior supply for both fish tanks and aquarium. _x000D_ _x000D_ EASY INSTALLATION: _x000D_ With the acrylic clamp, the aquarium water changer is easy to install on to your aquarium wall. You can also directly use it as a water pipe rack, which can fix 16/12 water pipes. _x000D_ _x000D_ COMMON SIZE: _x000D_ The floating valve has a 1/4" Supply Tube thread, this is very common in the pipeline world, which is easier for adding water and storage. Floating ball is small in volume and will not occupy the space in the fish tank. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_