fragging the nems is easy. Just gently remove it from the rock/substrat that it is on, and cut it cleanly in half, ensureing that the cut passes through the mouth (essentially cutting the animal in half). Make the cut in a seperate tank and give the animal about 30mins to recover in the "cutting tank" The important thing to remember is that you must be careful with the base (foot) of the animal. Upon cutting the animinal in half, the will close up aroung thenselves to seal the wound. You may find that it re-inflates within 5 minutes. Good luck.
I've been doing extensive research on this, particularly as I am in the planning stage of setting up a nem-specific tank and have settled on the method I will use for prop. After combing through vids on Youtube and reading the RC archives for hours (including researching individual posters history to see what practical experience the comments that grabbed my attention were based on) I settled on sections of information and a few vids I could trust. Let me tell you there is A LOT of opinion out there on the world wide web that is based on absolutely nothing, so I had to wade my way through a lot of that to pick out the comments from people who were actually keeping and propagating nems - although to be fair the 'nems have feelings too' nutters amused me somewhat ;)
This video goes into things in finer detail and the procedure for propagation is pretty much
dr_schell instructions word for word:
For those who want a summarised version....
I watched the following two with the sound off so apologise if anything is odd with the verbal instructions given!
And the disappointing kicker, I've decided not to prop my nem until I have the new tank setup and both the bubble tips settled (yes, I have purchased another, they are addictive!). Now to find a Rose Bubble Tip Anemone to complete my collection :) I won't be doing a video as there is plenty of info online for that part - but I will document the recovery with photos and possibly vid (all going well).