Key Features Genuine Oase BiOrb - AC Version Kit that includes Air Pump, 1 x Airstone and 1x One Way Valve with 1m of clear airline Ideal replacement for existing Air pump set up Can be used in BiOrb and other Aquariums Easy to Install set BiOrb Air Pump Kit contains all you need to replace or add an air pump to your aquarium set up. The BiOrb Air Pump is a vital part of your tank system, it helps to add the essential oxygen the fish need to stay healthy and is a reliable unit designed to operate constantly 24 hours a day. Ideal for use as a replacement pump in any biOrb aquarium, but is also suitable for other tank brands. The Air pump is a safe and low voltage replacement straight from BiOrb and is simple to replace, simply unplug the old one and plug in a new. Provided with the Air Pump is a One Way Valve. It is always advised to have a one way valve connected to your airline between your aquarium air pump and the outlet point. This prevents water back siphoning through the airline