Thanks for showing the spike pics - I haven't seen the time lapse sequence before. Now I know that what I thought was a spike is really just a root that's growing straight up.
I never understood the whole "mitten" thing until now.
All my Phals have really taken off in the good weather the UK has had in the last few weeks.
I have roots growing on pretty much all of them. At least half have new leaves, and I have also spotted a lot of spikes starting. Many of them are doing all three at once.