I'll have to remember to try this sometime. I haven't done too much cloning, but I've gotten good results from using basically a mini DWC bubbler. (Like a cut-down water bottle or cup or something with an airstone in it.) A little Clone-It, keep the water fresh, and it's all good.

I've gotten decent results, but this looks like it might work better for me.

The real trick is going to be to remember to buy the Rapid Rooters...