Airstone or powerhead?

[Maridia]

What is better in a freshwater tank?

 

[Delapool]

What is better in a freshwater tank?

I like an air-stone just for the look and the bubbles help hide filter pipes. I don't get much flow out of it though. I use the internal filter more for flow basically as a power head. I only use liquid co2 though and direct the internal filter flow around the plants.