Just dropped two Amnesia Haze Autoflower beans in a cup of 5.5 pH water. One drop of SuperThrive added. Now it's wait and see.
Going to use rock wool.
Okay...once the beans crack and sprout their tiny root tails. I'll insert them into the whole in the rock wool. Pinch the hole closed and put in a small propagator. My question is when they show their heads..what do I do then. In other words...when do I start the DWC set up?
My way...after they sprout and have been up a day or two I take them and put them in the rocks.
Until the roots hit the water I keep the water level almost up to the bottom level of the cube and then I top water for about a week. Since you have the sprinklers you won't need to top water manually.