Mornin Pv1, Any time you have water that will stand it will loose oxygen. It is wise to provide oxygen all the time. So yes, make it a habit for any Hydro setup to incorporate air stones. Luck and Life.
Nim
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Make the most of the hempseed, sow it everywhere.
GEORGE WASHINGTON
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FWIW: I tried growing maze in my drip system without an air stone and I developed a minor mold issue. After putting an air stone in the bucket for the second experiment with maze, mold was no longer a problem.
So, I'd say use one. I'm using one for the weed grow now and everything looks nice and healthy. For $10 it's good insurance.
Best of luck.
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