Thank you all for the helpful posts!
I watered them yesterday and today, it seems like today, the roots at the top are dry, but I'm not so sure about the roots deeper down. The pot is plastic with slits on the sides, and I forgot to mention earlier that I added some coconut fiber to create a more airy mixture. I think I'll have to experiment around to find the right watering regimen.
The two vandas are like twins, and they're about 2-3" tall with leaves that are on average 3" long. However on one plant the newest leaf is maybe 4-5" long. The leaves aren't very wide, probably only 1/2" wide. So yeah, they're pretty young. Each plant has maybe 7-8 leaves, and each has a new leaf and new roots.
Someday I want to flask my own vandas! Or at least grow 'em from flask. Baby/young vandas are just soo cute. Oh well, I don't mind waiting so long, I guess. I just hope I don't kill the ones I have know (I did that to my first vanda
). thanks again for the info!