I was doing some maintenance on my goldfish tank last night, which included changing filter media. Somehow a small piece of carbon floated out into the tank and before I could get it, my biggest goldfish Jack (about 3") ATE it. I watched him closely for about 20 minutes afterwards and did not see him spit it out. I'm worried about him. What do you guys think the possibility is of him becoming impacted and dying from it? I don't think a piece of carbon is going to break down in his digestive system...is it? :sad The chunk was about the same size as his food pellets are. He's still eating and being his normal self...for now. *sniffle*