I'm pretty much at the end of my fishless cycle that I have been doing for about a month now. A couple weeks ago I noticed some strange whiteish, fuzzy looking stuff growing on one of my tank decorations. I didn't really think anything of it and thought it might just go away but it has gotten worse and is on another one of my decorations. It is clumped in some areas and stringy in others. It is not, however, on my fake plants, heater, filter, walls or gravel. The decorations that it is on are slimy to the touch and the stuff breaks away easily. In some spots it's yellowish. So what is it and what is my best course of action for getting rid of it? Here's a couple pictures sorry they're not larger.