In- Multiple Angles Double Fixation Mute Punch Free Fish Tank Water Filler Adjustable Water Level Replenisher Aquarium Supplies Description: Designed with differential pressure principle, this automatic water replenisher is convenient for positioning and water supply. This fish tank automatic water replenisher uses simple structure, so you can use it easily and conveniently. Made of high quality plastic material, the product is strong and durable. The length of this product is 7.5cm. It is suitable for most fish tanks with different wall thickness, and has the function of adjusting the water level. Item Name: Fish Tank Hydrator Material: Plastic Features: Automatic, Adjustable Water Level, Simple Installation Size Details: Hydrator Length: 7.5cm/2.95(Approx.) Description: Purpose Water replenisher: A configuration adapter with a caliber of 28MM (can be connected to carbonated plastic bottles such as Coca Cola/Pepsi Cola/Sprite)