Quote Originally Posted by 420barista
why would you possibly want to attach the air stone to the bottom of the net cup? wether its up there or on the bottom, air when released in liquid, it rises. I would tend to think that leaving well enough alone and the airstone on the bottom would work better. The air will oxygenate the nutes and also help in circulationg the solution around. if im wrong im sorry but I tend to be logically inclined.
-He said he did this when the roots have yet to grow thru, assuring the medium would get splashed and pass the moisture to the new small roots. Although, you would need to be sure that the airstone stayed submerged, as it could get worn out quicker with just air being pushed thru the dry stone.

-Decent idea, but maybe a little slack would be better, insuring it would stay under if the water level were to drop too low. Or just flipping the stone upside-down then attaching.