You and me both my friend, I am experminting as we speak lol. I am putting the air tube straight into the rockwool cubes in my DWC system. They are babies so I am trying to stimulate root growth because in DWC they really don't take off til the roots hit the o2 rich water in the rez. I think it is working! Both the little ladies I did the test on have grown a LOT in the last 24 hours, so I did it to the rest and they all seem to be loving it. I may have something here lol