This is an eclipse filter and I clean it weekly so I think it is unlikely he would rot if he did die. I guess my thought is if he wants up there so bad he is willing to climb there every week then so be it. Even when he is in the tank he hides behind driftwood so I never see him so it really doesnt matter much to me. I dont think I will be investing in any more. They are pricey and when healthy just sit in one place. They are very cool looking though.