Fish tanks need constant aeration to keep oxygen levels up and water moving, especially in heavily stocked setups. Below you'll find fish tank air pumps from leading brands such as Swell, Fluval, Eheim, Aqua One, and more, plus the airline tubing, valves, diffusers, and air stones that connect them to your tank. Pair a pump with one of our aquarium filters for the best water quality.
Aquarium Air Pumps and Accessories
Help and advice on shopping for: Aquarium Air Pumps and Accessories
What are fish tank air pumps and accessories?
Air pumps push a stream of bubbles into your tank through a length of tubing, keeping the water oxygenated and moving. Accessories such as valves, diffusers, and air stones connect to that tubing to split the flow between multiple outlets, diffuse it more finely, or even add a decorative touch.
Why do I need one?
Dissolved oxygen is essential for fish, if they're gasping at the surface it's a sign they're not getting enough. Aeration also helps to circulate the tank, supporting your filter and keeping the water from stagnating, which is especially useful in smaller, warmer, or heavily stocked setups.
What do I need for aquarium aeration?
The pump is the hardware that pushes air out; everything else routes and shapes it. Airline carries air from the pump to the tank, valves let you split or control flow to multiple outlets, and diffusers or air stones break it into finer bubbles. Head to our Aquarium Air Pumps category to choose your pump, then Aquarium Air Pump Accessories for everything that connects to it.
What should I look for?
Match the pump's output to your tank size, and check the outlet count if you're running more than one airline. If you're looking at running a planted tank with CO2, remember that aeration drives dissolved CO2 back out of the water, so most keepers will turn the pump of for a few hours each day rather than running it constantly, try our CO2 and Planting Equipment selection to perfectly match your setup. Pairing a pump with one of our aquarium filters also helps to maintain water quality between changes.