Im not quite sure if this would be the right section or not, i wasnt really sure where to put this. But i have a bio-active terrarium that's been setup for a bit over a month now, and suddenly some gnats appeared? I recently put a vine and fake plant in there but i dont think thats the cause. Im getting the gecko on thursday. Im not really sure what to do. There arent too many, and im just leaving the doors on the cage open for now...any ideas as to what caused it or how to fix it?