Floating Plants with Mbuna?

when i had my 55g mbuna setup, no matter what plants i put in there, they tore em up. but good luck!
 
I had frogbit & duckweed in my tank, the duckweed was eaten first than the frogbit but it took quite some time. If you have a renewable source it could work (I pulled it out of my 10g).
 
I would say duckweed but only if you really want it, Duckweed is pretty invasive..
 
AquariaCentral.com