Oldmac I believe has long since quite playing with his designs. He nailed it long ago I believe. The one thing you will discover about his system versus other fog systems is that Oldmac spent a ton of money on his systems. He has true aero sprayers, HO pumps and on and on, this in addition to the primary system of the Frapas fogger. He's got enough equipment to run a hydro farm.

So the answer is yes, it can be done as Oldmac is proof, but unless you are willing to dump 1000$ bucks per tray, I'd stick to using it as a secondary system.