Airstone and power head?

[AZdogpatch06]

Hey folks, I just acquired two koralia circulation and wave pumps by Hydor. I just discovered that power heads are a thing when I recently got into saltwater. So when I had to get one for the salty tank, I bought one for the fresh. My question is if I need any type of air stones in either tank now? Thanks! Freshwater

Nano reef

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