EWWWW What it this!?!?!?!?!?
So I just noticed this "stuff" growing on the hornwood in my 40 breeder tank. Mind you now the wood has been in there for about 2 years now and this hasnt happened since the wood was first put in there. The more "cotton" is rather tiresome to remove as I have to pull each little clump individually with my hand. While the other branchy one has to somewhat be scraped off.