Problem with Anubias Nana - expert advice needed. Please help!

This could be a little late in advise but I believe your plants are more of a bog plant than an aquarium plant. I had a simpler problem with what I thought was an aquarium plant. It did well for a while and then the old leaves died. The new ones came in but did not grow very large.
I have taken them out of the aquarium and have made a bog like aquarium. They are doing a lot better now.
 
Okay, I'll chime in late. Anubias in general are streamside or waterfall-side plants, which in the wild are seasonally innundated.

A. barerii variety nana I've been growing about 15 years without problems as a submerse plant. It does grow faster emerse if you keep the humidity up, but my 15-20 square feet of it (it is the "carpet" in all my planted tanks) were developed from one rhizome, submerse at the beginning and still submerse.

Sorry, but I have not had the problem you mention with the plant, so can't offer suggestions. I was one of the 57 non-responders as well. The only rot I've ever experienced was from trying the rhizome burried.
 
I don't know if this is going to help any, but I checked theKrib.com and came up with this:
http://www.thekrib.com/Plants/Plants/Anubias-nana.html#13
It sounds similar to what you're experiencing and thought it would be worth passing on.

I read on another plant site (http://paul.aaquaria.com/Enter.html) that when you cut the anubias rhizome, you should use a clean, sharp blade and dip the cut end(s) in a bit of carbon or charcoal or something... Can't remember. I think I've even seen products that basically sterilize the severed part. Sounds like your plant succumbed to a bacterial infection of some kind.

Hope it recovers. Sorry to hear that it's been doing poorly... I lost two tanks full of dwarf Lobelia cardinalis last year to some horrible disease. It all disintegrated SO quickly, but up to that point, they were doing great. I think I cross-contaminated from one tank to the other. And none of the other plants were affected. Go figure... It was so disheartening. Nobody could help me because nobody had any similar experiences. I didn't think anybody would be able to advise me, but I figured it was worth asking, at least. It was my favorite plant, too. But I got over it and decided to try new plants. I think I now have a new "favorite" every week! ;)

Happy planting!
 
Thanks everyone and thanks for the useful articles.

The plants look ok for now.
I know about the charcoal thing - i do that when I cut the regular plants (cacti, for example), but I didn't find it useful here at all.

Charcoal heals the plant by making the wound dry sooner (and probably something chemically too), but I cannot dry the plant that lives in the water. :)
 
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