I'm always on the hunt to make my tank easier to manage or a process for my tank easier. One thing I hated was doing water top-offs. I would always forget to do it, and lugging this big bucket of water around became a pain. So I ended up buying an ato from Tunze and it has made my life so much easier regarding water top-offs. So I am wondering, what equipment has saved you from a lot of headaches regarding your tank.