Theoretically, if the filter is properly sized you would not need an additional air pump. Water movement, circulating the water from the top to the bottom you would mix water with more oxygen in it to the bottom. You might try it first without the air pump. If you notice the fish are always at the top, if the tank is tall, if need an air pump to run an ornament, if you like the way the bubbles look, then you would need an air pump. You would need to purchase an air pump, airline tubing, check valve, and an air stone to disperse the air as smaller bubbles.Thanks.
answered 3 years, 9 months ago
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