Let me get this straight...
So the only purpose of an air pump is to move or agitate the surface of the water with those air bubbles?
If you have a pretty strong power filter, you don't need an air pump then right?
The air passing through the water isn't actually what puts oxygen into it. Its when the bubbles come to the top and break the surface. So having a powerhead running its jet across the top of the water line is plenty of oxygen exchange. Having a filter that brings water up then drops it back into the tank (like a hang on back type) will have the same effect.
i personally don't like to use air stones or anything like that because i think the air pumps are louder than power heads and the hoses get in the way and look bad.
I suppose the only real reason to have an air pump is if you like the look of the bubbles or want a fake clam shell or something.
haha ok cool. Now I don't have to waste my money on an air pump and airstone since I'd be getting an HOB filter anyway...
You'll need battery-operated airpumps, however, in case of emergencies or power outages unless you have an electric generator for these situations.
Hmmm... That's true. Are they fairly cheap or do they cost more than the electric ones?
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