I'm curious. Has anyone used those floating pots ("islands") for their cps? If you are not sure what I'm talking about, they look like miniature life-saver rings (styrofoam circles) that go around a plastic pot. You place the pot, with its floating ring on, into a small pond and it floats near the surface.
Obviously, these plants get most of their water from the bottom. Are there any advantages/disadvantages of them? Are there any plants that can tolerate/thrive in such a device (vft, drosera, etc.)? Would the plants have a higher chance of root rot?