thanks cris, will be taking an axe to them in a day or 2. Glad to hear they still grow when floating, as I have one that just will. not. stay. grounded.
How big around do these things get, do they increase in diameter very much or at all? Oh, and the success can only be attributed to good stock on your part as I do *nothing* special for plants. No CO2, no tabs, no ferts (unless you count shrimp poop, and that just seems flat unlikely given its limited mass), and light is 2 13 watt curly bulbs over a 10g. So either 2.6 watt/gal or 15.2w/g depending on whether you count by actual wattage or the claimed brightness of bulb.