I've noticed a dark blob on one of my acans. It seems to be stuck on there pretty good as I can't get it off by blowing on it with a turkey baster. Is this something to worry about leaving? It hasn't moved/grown or anything, meaning to say I don't think it's a parasite, but I'm not sure as a random piece of debris shouldn't be stuck like that. Y'all got any thought?
Edit: It may look like it's directly over the center, but it's at the base of the feeders towards the front.
Edit: It may look like it's directly over the center, but it's at the base of the feeders towards the front.


