mclovin

Hello, I have recently tested the air inside my house (3 hours exposition time) for bacteria,yeast/mold. The petri dish for yeast/ mold is a typical one. However, for the bacteria petri, there's a rather large colony growing, wich i suspect of being bacillus mycoides. If any1 can confirm this, or give me a hint on what you think it could be, i would appreciate it very much. (Sorry for the picture quality)