Place the pump above water level to protect water from flowing backwards, otherwise it should be fit with a non-return valve. We are not responsible for any wrong or undeliverable addresses.
If you receive defective item(s), please kindly notify us within 7 days. We will guide you the returning instruction for replacement. We don't accept the return for you bought the wrong size, wrong model... Thank you for purchasing your item from my shop!We want to assure you that we stand behind our products and we always will do whatever we have to in order to correct any issues or concerns you may have. We offer quality goods at a fair price. Working time : Monday - Friday 9:00-18:00 (Beijing Time). Power: 50W Voltage: 220-240v Frequency:60/50hz Pressure:>0.03Mpa Output: 60L/min Noise>40dB Weight:6.4kg Size:241173199mm Packing included: One Pump(included au plug)+ one EU/UK adaptor. The item "Air Pump, Hailea Oxygen Pump Hi-blow Diaphragm Pumps For Fish Aquarium ACO-9730" is in sale since Sunday, November 11, 2018. This item is in the category "Pet Supplies\Fish & Aquarium\Air Pumps". The seller is "summerstore2016" and is located in Shenzhen. This item can be shipped worldwide.