I have a ten gallon tank home to one c. orientalis; it is divided into land and water with a Duetto50 filter in the water. There are three ferns, creeping fig, moss, and polka dot plant on the land, as well as tillandsias growing on the cork bark. In the water there is some Java fern, Java moss and some cryptocorynes (sp?). I have a piece of driftwood in the water, protruding over the land part, for Flame ( my son named her) to get out if she feels like it. So....I have noticed bugs in the viviarium. There are gnats, but also some tiny hoppy things that live on the wood (I think); they also float on top of the water. The little things are kind of blueish gray, and there are quite a few of them. Any ideas on what they are, and if they are a problem? Are the gnats a problem? Thanks!