I might be full of it, but I heard they use the stored energy of some leaves to root and the leaves turn yellow and eventually fall off when all the energy is used. Don't cut them off either they need that energy to grow and may die alltogether.
I have 3 newb questions, sorry if they sound stupid and thanks for the help in advanced.
This is my first grow in a bubbleponic (DWC) system and I got a few clones that are rooted in a brown circular foam-looking plug with possible peat.(it looks like foam but has a gritty dirt like substance...