My Es are definitely trashing my tank. I have never had this many holes, plants drooping every where, even suction cups falling. And I hear them all night long! But they are super cute and fun. I am happy I have Es and Purple Pinchers. My son loves Spiderman, so he wanted this fish tank ornament. And since he knows how to manipulate me, he said it was for the hermit crabs tank. So I got it, not expecting anything, it was just to make him happy. Well, the hermies love it Always on it, I have seen as many as 3 at a time! So, I had to share, enjoy!