i buried the roots on mine in the sand cause i didnt want them floating around the tank and they seem to be doing fine for me, i have 3 and 1 is doing great, sending up shoots to the top of the tank (its a 24" high tank mind you) ones doing so-so and another seems to get eaten faster than it grows.
i havent seen any fish messing with the "bananas"
i havent seen any fish messing with the "bananas"