yeah i just pull the stalks that are dead or look iffy- but they do keep the aquarium smelling nice and such- but if you need to clean the gravel they don't like their roots upset- i've had to pull them up twice to clean everything out and both times they got wilty for a while. And they need some natural light- if i go away for the weekend and don't leave my shade up they don't look so good when i get back.
also in those packages some might be duds and not sprout- or some people have complained of fungus infection but i haven't had that prob here.