The HYDROS Control X3 Starter Pack by CoralVue is a complete monitor-and-control aquarium kit that adds pH/ORP monitoring right out of the box. Built around the Control X3, it bundles everything needed to watch your water and automate equipment on a saltwater or freshwater tank — including a pH probe and calibration solutions the sensor-only packs don't have. What's included Control X3 unit Power supply Temperature sensor pH probe & calibration solutions 4-Outlet WiFi AC Power Strip HYDROS app (iOS & Android) What you can do out of the box Monitor temperature and pH/ORP, add water-level or leak sensors to the Sense Ports, switch equipment through the included WiFi Power Strip, and get instant alerts — all with no coding. Frequently asked questions How is the Starter Pack different from the Monitor Pack? The Starter Pack includes the 4-Outlet WiFi Power Strip so you can control outlets immediately. The X3 Monitor Pack swaps that for a point leak sensor — it's monitoring-focused, and you add a power strip later to control. What about the Pro Pack? The X3 Pro Pack replaces the WiFi Power Strip with the hardwired eight-outlet XP8 controller and a Command Bus cable. Full X3 specs? See the standalone HYDROS Control X3 page. Shipped fast with expert support. Get your HYDROS gear from real reefers at Marine Concept Supply, with setup help when you need it and local pickup at our Wheeling, IL showroom.