Hi All!

I have a 48x12x15 tank which is illuminated using a 36" white fluorescent
and a 36" tropical fluorescent. The water is medium hard.

I placed a few really beautiful specimens of cabomba in my tank
approximately 3 months ago and all seemed well to begin with, then last week
the stems of the plants began to die and rot. The plants up until then had
been growing like wildfire with very lush green thick leave formations, I
even had a new plant spontaneously burst forth from the small pot they are
in. Is it normal for this to happen, and how could I get a plant to root
from a stem cutting?