Have just got some smart pots, I have looked about on Google but don't know what the metal pin is that comes with it is for, my guess is to tie the plant but I'm not sure any ideas guys-gals
It will allow you to do some LST , you plant the seeds on the opposite corner and when your plant will be tall enough ( 7 nodes aka 7 stage ) you will only have to put a wire/rope one the circle to bend the main stem and promoting the secondaries growth