It was horrifying to see on the glass, but was quite easy to catch due to its size. Just want to make sure you don’t tear them, because they’re extremely delicate and supposedly the torn pieces can become a new flatworm. It was unfortunate to go through, but it’s part of the hobby. Good to know about them now and what to look for to prevent it in the futureWHOA. That is both crazy cool, and horrifying to find. Sorry you went through that.