Although soil cloning will have an excellent survival rate ( almost always 100% as long as the soil isn't "hot") if you're looking to transfer the clones into an ebb and flow, you can take the advice of superstoner1 and use no media for cloning. The way that I do this is by setting up a dwc/bubbler with a level sensor(you can also maintain a dwc constant water level by drilling a bulkhead fitting,minimum3/4" pvc, into the bottom of your bin, attaching a pvc. stem so it rises as high as the desired water level,allowing water to overflow into a bucket or pail below which a pump will feed back into the bin and you will have to make-up the evaporation water yourself if you don't also use the auto-top off sensor) that will activate an auto top-off system to keep the water surface close to the tips of clones that are sticking through 1/8" (exactly) holes in a piece of 3/4" foam board ( the kind you find in the building supply stores). Make sure your dwc pail/bucket/bin has plenty of aeration to create a "rolling boil" bubble effect which will be observed at the air/water interface (the water surface). I achieve optimal bubbling and aeration with 8"round aluminum oxide air stones ( non deteriorating) and a Danner pondmaster 50-100 watt pump (drsfostersmith.com). When the clones are rooted, just cut a a circle or square around each clone ( a 1" dia. or sq.) and transfer the clone to the hole it will sit in for the flowering period with the support of a neoprene foam collar or even a 1.5" rockwool cube used as a holding collar ( surrounding the stem just above the roots). If you use the rockwool holding collar method, your hole in the ebb and flow flowering system should be 1-1/8" ( a 1-1/8" hole saw bit will do).
