Based on the pics that I have seen online. I have concluded it is not a nudi. It appears to be a stomatella. I would have posted pics but I am unable to get a clear shot close enough.
Here is another what is it?
I have three other things I've noticed.
1. A purple and pink circle on the glass. I am assuming it is coralline algae. Does it normally grow on the glass first? I'd prefer it grow on the rock. Does anyone agree? If not, what is it?
2. I have just noticed last night about 6 tiny white snails. Completely white. Are these baby snails from the two i have in the tank.
3. I see very tiny transparent 5 leg or star organisms on the glass. I have no idea what they could be?
It's awesome that all of this is growing from the live rock as long as it remains harmless in the tank.
Finally is there anything I can do to speed up the growth of coralline on my brs rock that are plain white in the tank or is it just time? Probably time.
Thanks for everyone's input and comments. Very interesting.