I use them to root clones and seed.I had to throw together a bubbler the clones were wilting and got them back with this shoe box size plastic box with a lid.I cut holes in it and use this flower foam and cut them to fit the holes the the top and cut holes in thr foam for the rr plugs.It worked great,had 50 roots popping out of the plugs.In the hydroton net pots into the cab in ebb&flood.Heres a pix . the ones in the cab are the same that are in the shoe box.The RR plugs work better for me.You just have too keep them moist not wet and they work just fine.PEACE
Forgot 3 are clones and one seed.Peace