100% of my brews have the scoby completely seal against the walls of the fermenter. What is your temp? By day 11 it should be all the way across. The micro form the scoby and they do better at 74* to 86* , I prefer the flavor of a longer ferment at 74*. I let mine start at ~68* for the first 2 days to kick start the yeast and keep the micro down. Also I've seen this if not given enough breathing room or too tight a cover,you only need to keep out dust and fruit flies. If those tiny ones don't have fuzz,then I like the tiny baby scobys.