I had transplanted the Siberian tomato into a five gallon bucket today. While I was out there today I picked up the sealed container that had the left over coffee grounds in it. Looked inside at the grounds and it had the same mold growing on it as the seed starting container I threw out. Remember I mentioned that I put coffee grounds in it.
After supper I was looking up what that mold was on the coffee grounds and came across this very informative article. Obviously nothing to be concerned about with the mold on the coffee grounds.