Tee Airline splitters are often to split one airline into two. If you want to run a second airstone or decoration in your aquarium but only have one pump. Also you can use this to split air off from the main aquarium to a second aquarium like a quarantine aquarium.
Use this 5 pack of Tees to split one airline into two channels. This works best with air valves so you can control how much air goes to each line after you split it. Ensure you use airline with clean cut ends and inspect it periodically to ensure the tubing hasn't hardened and lost it's snug connection.
I would definitely recommend adding these little guys to your tank. They are very playful and entertaining. My three were very healthy and quickly adjusted to my tank.
