Right now I moving them to a larger container that has sphagnum moss at one end. They climb right out on that. Just before I figure they will crawl out I seed the tank with springtails. Man do they multiply fast in that stuff. Shame I did not figure this out sooner. I lost some really nice looking ones. The salvinia auriculata is a nice idea. I'm using some some standard aquarium plant now who's name escapes me.