Hi, I have some angels that were purchased 2 weeks ago. I put them in my quarantine tank and treated them with levamisole to be safe. They expelled large white things. I don't know if anyone can tell me if they are worms or maybe what type? They were expelled over night after levamisole treatment, so I was unable to see them being expelled. I also did not notice any protruding prior to treatment. Thank you for any input you can provide. The angels are 1/2 dollar size.