It can live outside or in tropical tanks. Its a tropical plant at heart from mexico. It grows very quickly but the actual plantlets are only 1cm across. They don't send down long runners so are easy to take out. Perfect really. Let me know
I would Highly recommend this stuff, its great for fry and sucking up waste. It can become a very thick carpet of plants in a few weeks. The pond in the Front Garden has this and its looks great.