Do you use "white prosso millet" in any enclosures you've got? At my pet store, we sometimes accidentally transfer one or two small pieces of millet into other tanks when we clean/feed/remove animals etc. into a tank that has eco or coco bedding in it. If the eco earth is moist enough, the millet will sprout, and it'll look like a little bean sprout and will get bigger.Yeah, the sub is really moist. It's definitely a plant and not a mushroom. Could it be something that may be harmful to the T?
That sounds like a good idea. This stuff happens sometimes...it was probably some kind of seed that got missed or accidentally landed in the coco while it was being processed.I think I'd remove it to it's own pot, and grow it up 'til you figure out what it is.