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Discussion Starter · #1 ·
I have a 30gl aquarium planted with 2 discus in it. I am using a DIY CO2 system and an internal biofilter.
I was wondering what is the air pump use in an aquarium. What are the benefits of using it?
My pet shop guy told me that I have to use one in order to sypply oxygen to the tank and is a must have.
 
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