HYDROS Control X4 Aquarium Controller
SKU: HDRS-CX4
MSRP: $ 434.27
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Available Through Authorized Retailer
- The HYDROS Control X4 is a robust controller for maintaining a healthy saltwater or freshwater tank.
- It is built for hobbyists who want pH, ORP, and water level monitoring without extra modules.
- Two pH/ORP probe ports and four sense ports cover most core monitoring needs in one unit.
- Two Command Bus ports let it join other HYDROS devices for a safer, unified failsafe system.
HYDROS
USA-built aquarium automation system that monitors & controls equipment from an intuitive app.
Aquarium Controller with pH/ORP Probe Ports and Sensor Monitoring
The HYDROS Control X4 handles the essential functions of running a healthy tank without requiring extra expensive modules to get started. With additional accessories sold separately, it can monitor temperature, pH, ORP, and water level, and control pumps, timers, and sensors. It works well in saltwater tanks, freshwater tanks, and ponds, and it can run on its own or link into a larger HYDROS setup as your system grows.
Setup is quick, which makes the Control X4 approachable for beginners while still offering the depth advanced hobbyists want, including two digitally isolated pH/ORP probe ports and a 0-10V port for connecting variable-speed pumps or legacy automation gear. All HYDROS products are engineered, assembled, and supported in the USA.
Key Features:
- Two digitally isolated pH/ORP probe ports for accurate, interference-free readings
- Four sense ports supporting temperature, optical and capacitive level sensors, and leak detectors
- Two drive ports delivering up to 1A each for ATO pumps, fans, and solenoids
- 0-10V input and output port for variable-speed pumps and third-party automation
- Two Command Bus ports for wired links to other HYDROS controllers
- Dual-core 32-bit processor for fast, on-device control decisions
- IP65-rated, splash-proof, dust-proof housing with aircraft-style connectors
Ideal For:
- Hobbyists who want dual pH/ORP monitoring without buying a larger all-in-one controller
- Reef keepers integrating variable-speed pumps or legacy gear through a 0-10V connection
- Anyone building a modular HYDROS system and adding sensors and probes over time
Pro Tips:
- Mount the Control X4 vertically before powering it on. Like other HYDROS controllers, it's designed to hang on a wall or side panel for reliable long-term operation.
- Use the second pH/ORP port for a redundant or ORP reading. Running two probes at once lets you cross-check pH accuracy or track ORP alongside pH without a second controller.
- Remember this is controller only. Probes, sensors, and dosing accessories are sold separately, so plan your accessory list before setup day.
What's Included:
- Control X4 Controller
HYDROS Control X4 Technical Specifications:
Physical
- Dimensions (L × W × H): 7.8 × 3.6 × 2.5 in
Drive Ports (12V DC)
- Quantity: 2
- Max Per Port: 1A
- Total Max Amperage: 1.5A
Sense Ports
- Quantity: 4 universal input ports
- Compatible Sensors: Temperature, optical level (single and dual), capacitive non-contact level, rope and point leak detectors, flow rate, magnetic switches, push-button switches
Probe Ports
- Quantity: 2
- Type: Digitally isolated pH/ORP input
- Compatible: pH probes, ORP probes
0-10V Port
- Quantity: 1 (input and output)
- Function: Controls or receives commands from HYDROS devices and third-party automation
Command Bus
- Quantity: 2 ports
- Function: Data transfer and power delivery to HYDROS accessories
Connectivity
- WiFi device control: Up to 8 devices via HYDROS app (requires HYDROS WiFi Power Strip, Control XP8, or Smart Plug, sold separately)
- App: HYDROS cloud-based app (iOS and Android)
- Local control: Available via WiFi even without internet
Processing
- Processor: Fast dual-core 32-bit
- Control logic: Executed locally on-device
Note: Control X4 only — probes, sensors, power supply, and accessories are sold separately.
Warranty
CoralVue, Inc. hereby guarantees this product to be free from defects in material and workmanship for a period of:
- 1 Year
Warranty is activated on the date of purchase.
This Standard Limited Warranty applies and is limited as follows:
- To the product only as long as it remains in the possession of the original purchaser.
- To the product that has not been subject to accident, misuse or abuse.
- To the product that has not been modified, altered, defaced, or had repairs made or attempted by other than CoralVue, Inc.
- That CoralVue be immediately notified in writing within ten (10) days of first knowledge of defect by owner or his agent.
- That CoralVue, Inc. shall be given first opportunity to make any repairs, replacements or corrections to the defective construction within a reasonable period of time.
- Under no circumstances shall CoralVue and/or the Manufacturer be liable by virtue of this warranty or otherwise for damage to any person or property whatsoever for any special, indirect, secondary or consequential damages of any nature however arising out of the use or inability to use because of the product defect.