i have quite a bit of watersprite growing in my 30g now as floaters, the floating stuff seems happy enough and it's sprouting babies and new leaves too. i planted one large piece into the subterate to try to grow it as a stem plant. it grew babies all over it and fell apart. i've seen some really nice pics of what watersprite can look like if it's grown as a stem plant, but how do i make it grow like that? do i need to start with sprouts to get it to live underwater?