My sauerkraut has a lot of air in it between the bits of cabbage. There's liquid on top, but I'm not sure I sqeezed the cabbage down enough to get out all the little air pockets inside. Will this make my sauerkraut grow the wrong kind of bacteria? It's been fermenting for about a week now. I have it in a glass container with a food-grade plastic bag full of water on top of it. So far I haven't seen any mold or anything growing.