For ATO I use a Tunze Osmolator, for feeding a Ehiem automatic feeder and for supplementing a Precision Marine calcium reactor plus a DIY kalkwasser reactor. Everything else is handled by a Neptune ACIII. You can find more information on them here
http://www.neptunesys.com/index.php?...d=11&Itemid=40 Rather than list out the details I'll just say that I'm taking advantage of nearly everything that it can do from general lighting control to water-on-the-floor sensors and text message alarms.