The Hydros X3 Pro Pack is an advanced controller system designed for saltwater reef aquarium enthusiasts seeking precise monitoring and control of their aquatic environments. This pack includes the Control X3 unit, Control XP8 unit, temperature sensor, pH probe with calibration solutions, a six-foot command bus cable, and access to the HYDROS app for seamless integration and management. The Control X3 features two Sense Ports capable of connecting various sensors such as temperature probes, liquid level detectors, and flow rate sensors, alongside a Probe Port specifically designed for ORP or pH monitoring. This system ensures that your reef tank is maintained at optimal conditions with real-time alerts and notifications through the HYDROS app.