05-07-2008, 11:43 PM
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All the negativity! I love my hornwort! I bought a single bunch of it for $2.99 and it has since supplied the entire 20g it was put into, a second 20g, and a 5g with tons of the stuff. I've never used any CO2, fertilizer, or special lighting. I just keep the lights on about 14 hours a day or so. If your gravel is even moderately thick, you can effectively plant it. My mystery snails sometimes uproot it, but it's easily replanted. It *will* float if unanchored, so you can also sort of wrap it around driftwood or under logs for a good look. It also makes great floating cover.
I've never had the needle shedding problem. When I'm doing my weekly tank maintainence, I simply pluck off the stems that are losing some of their bright green color. That way, there are never any dying pieces to start shedding in the first place.