I have some red Cryptocoryne wendtii in my 55 gallon and had some green Cryptocoryne wendtii in my 5 gallon. In each tank, over the course of a couple years, they spread throughout the entire tank. Do others have this problem? How do you prevent it? I tried pulling some up, but the gravel was just solid with their roots. Could you bury a container in the gravel and plant them in that?
