Thanks - I just don't want to buy them only to find I'm replacing plants constantly... knew they were herbivores, will research some more before I decide - as said before, haven't got tank set up or cycling yet let alone, planting or stocking with fish!
Today maybe the day I start though - the tank is cleaned and ready to come indoors - its 200l and only logical way to fill is with the hose, but as we're having snow I'm not sure the rest of the family would like me to have the window open while I fill it up!!
Gotta move my biorb somewhere else too.