@OllieNZ I have access to one that my buddy isn't using anymore. They do work great. I'm taking care of his tank next week while he's on vacation. Maybe I will borrow it from him until the Tunze 3161 is released.
Perhaps I will redeploy the Mame skimmer too for a little insurance as Subsea suggested. It is a lot less aggressive than the 9004 and it just looks damn good