Well now that I have completely cleaned the tank out & removed the problem plant from the house. I have not seen any in the tank, or in the whole house for that matter. I was using Coconut shavings (ecto-terra?) for the substrate and my snake loved it because she could burrow. Now that I've changed it to the Carefresh, she's not very thrilled because she's not able to keep any burrows in the substrait, but she'll have to live with it for now. It's entertaining to watch her try to burrow and then it all collapses when she leaves, I wonder how frusterating that it to a snake. Anyway thanks everyone for all the help.
Brittany