Unnatural Growth (pics) Hello! First, I apologize if this is not in the appropriate forum. I'm not quite sure where to post it. I have two questions about two things that are growing in my tank. Both of the questions are "What is it?" and I have provided photos to help out with the identification. The first one is this . . . "thing" that is growing off of my Java Fern leaf. All my Java Ferns have those little green protruding things. They are a little bit hard and scrape off easily even without using my fingernail. On a closer look they look like part of the plant itself, but I am not sure. Is it supposed to be there? Also, it is only on the underside of the leaves. The second one is that white substance that looks like wet cotton. It was originally growing on (and only on) the suction cups that hold my air stone. Nowhere else. When it was in its undisturbed form, it looks like a little piece of fluffy cotton, white, or pinkish-white in appearance. Slimy to the touch. I got as much out as I could, and put some of in on the Java Fern leaf so that you can see it against the dark background. I'm sorry that the photos are not of better quality. Any ideas?