ID and good or bad

Good that you "get rid" of "it" that way. I dont know about you, but I did the same to one of my rock that had so much of bad stuff on. but instead of throw it out, I covered the rock with a black tower, deep it in for a a while then keep it cover, deep it back into a small "hospital "container" , now it's in a spare tank (small though) and I am watching it to see those bad guys still survive after the bath. Hehe.. Fun to try something new and ... weird.. LOL
Good luck there.