What was your experience with the plant?
Did your plant do the same thing when exposed to the air that mind has?
I have beaten the crap out of that plant in the last week. I did a full water change/tank cleanup, leaving the plant in the 5g, rhizome in, fronds above water, same thing happened again as before.
One thing is certain based on my experiences, that plant would not last an hour in a terrarium.
Interested to know what happened to yours.