Hi All, I've been dealing with these numerous white wavy things on my glass (photo below), driftwood, and the bubble disk for the last two months, since I started the tank. I have tried wiping down the sides and done all of the requisite water changes, to no avail. At first I thought it was columnaris but I think all of my fish would be infected by now if that were the case? I don't think that I am overfeeding the tank. I'm mystified. Anyone have any ideas about what it is, how to get rid of it, and is it dangerous to the fish? Thanks so much!