Mike wrote:

Hi,

Today I noticed a new growth on one of the external roots of my
phalaenopsis. It's small and pointy, so I'm assuming that it's a new
root. Is it normal to grow a new root from an old external root? Or
could it be something else?............................

Generally, only roots grow from roots. Orchid roots put out side
branches all the time. Phals probably do it a little less than most orchids.
I started with the word "generally" because there are rare exceptions. I
have seen pictures of new plantlets forming from a root. I have never
seen that happen myself and, chances are, you never will either.

Steve