Digital Aquatics ReefKeeper aquarium controllers are a fantastic solution for not only automating your aquarium but also saving it from potential disasters. The most common version is the ReefKeeper Lite. If you have a large saltwater aquarium with lots of equipment the ReefKeeper Elite might be the best option for you. Both are fully capable of monitoring and controlling your aquariums temperature, lighting, chillers, pH, ORP, pumps, LED moonlights, wavemakers and even your auto top off system. You can program the reef keeper using the head unit as well as by connecting it directly to your PC and using the myreef software to program the controller.