Haha every night my 2.5 foot channel catfish that I got on sunday separates the pump from the output hose because he's playing with it. I got in the pond today to put some slate over it and that seemed to work. Of course, it has only been three days and he is unfazed when I get in the pond. He actually came over to me a couple times to see what I was

They know what they're talking about. Please take their advice too.