Air Vent is very similar to the air stone--but better. Not only does this air vent have even air distribution, it also has the function to be changed into various lengths. Each air vent package comes with interchangeable and connectible pieces that can be connected to up to 2 feet (24 inches or 60 centimeters) long. Each Air Vent package contains 6 pieces, which are 4 inches long each. Additionally, one can purchase two or more Air Vent packages and adjoin the pieces to create an even longer Air Vent. For example, two packages will allow you to have enough pieces to connect an air vent that is 4 feet long! We recommend a stronger air pump for longer Air Vents.
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