04-19-2008, 09:58 PM
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Power head vs airstone
I think it depends on what you want to do. I have a powerhead in my 75 and I turn it toward the side or it puts out too much flow. If I regulate it too much, the flow will stop at some point.
I use an airstone/motor for a 40G in my 30G tank. I keep a curtain of bubbles on the side of this tank. I set the filter on the opposite ends of the tank. That way fish who dont like too much flow have refuge.
If you are trying for a lot of flow, like for hillstream loaches or such, go with the powerhead. If you just want something to provide a bit extra circulation, the airstone is fine....