Black Brush Algae. High Phosphates seem to bring it on, but eliminating phosphates doesn't gaurantee their removal. My tank is infested with it, and any leaf older than a few weeks old has at least some along the edges.
Siamese Algae Eaters are supposed to eat it, but I haven't been able to get my hands on any, so I can't verify that.
- Sam P -
plantedtanker in limbo - all tanks currently in storage