All the control. All the monitoring. Built for serious aquarium automation.

The HYDROS Control X3 is a powerful smart aquarium controller designed to help hobbyists monitor, automate, and protect their aquarium systems with advanced control features and simple app-based setup.

Built for both freshwater and saltwater aquariums, the X3 combines monitoring, alerts, equipment control, and expandability into one compact controller. The system includes support for temperature monitoring, leak detection, water level sensors, pH or ORP monitoring, automated equipment scheduling, and smart notifications directly through the HYDROS app. HYDROS describes the X3 as capable of controlling lights, pumps, feeders, and more while operating as either a standalone controller or part of a larger HYDROS ecosystem.

Designed with an IP65-rated splash-resistant enclosure and industrial-style connections, the HYDROS X3 is built to withstand harsh aquarium environments while remaining beginner-friendly and highly expandable.

Perfect for reef keepers looking to step into advanced automation without complicated programming.

Smart Aquarium Automation Made Simple

The HYDROS ecosystem is designed around easy app-based configuration with no coding required. Through the HYDROS app, users can automate equipment schedules, create alerts, monitor parameters, and expand their system over time using additional HYDROS devices and accessories.

Key Features

• Smart aquarium monitoring and automation
• Monitor pH or ORP with dedicated Probe Port
• Supports temperature, water level, and leak sensors
• Control pumps, lights, feeders, and equipment
• App-controlled scheduling and notifications
• IP65-rated splash-resistant enclosure
• HYDROS Safety Net communication system
• Expandable HYDROS ecosystem compatibility
• WiFi and cloud-based control
• No complicated programming required

Specifications

• Controller Type: Smart Aquarium Controller
• Aquarium Compatibility: Freshwater & Saltwater
• Probe Port: 1 (pH or ORP)
• Sense Ports: 2
• Connectivity: WiFi + HYDROS Command Bus
• App Control: HYDROS Mobile App
• Enclosure Rating: IP65 Splash Resistant
• Expandable System: Yes

What Can the HYDROS X3 Control?

The HYDROS Control X3 can be configured to monitor and automate many common aquarium tasks including:

• Temperature monitoring
• Leak detection
• Water level monitoring
• Feeding schedules
• Pump and equipment scheduling
• pH monitoring
• Alert notifications
• Smart outlet control
• ATO systems
• Aquarium safety monitoring

HYDROS also allows multiple devices to operate together as part of a larger “Collective” automation ecosystem.

Important Compatibility Information

⚠ Controller only — probes, sensors, power supply, and accessories sold separately.

Compatible accessories may include:

• pH probes
• leak detectors
• temperature sensors
• water level sensors
• smart outlets
• automatic feeders

Great Pairings

Pair with:

• HYDROS Drive Port Automatic Fish Feeder
• HYDROS Leak Detection Kit
• HYDROS Temperature Sensor
• HYDROS Smart Plug
• HYDROS ATO Systems

Why Buy From Infinity & Beyond Aquatics?

We focus on more than just selling aquarium equipment — we help hobbyists build stable, successful aquatic systems through carefully selected products and real-world reefing experience.

Curated aquarium equipment
Beginner-friendly support
Small business customer service
Hobbyist-owned and operated
Free shipping on qualifying orders over $100

Shipping Disclosure

This item may ship separately from other products in your order depending on warehouse availability and fulfillment location.

Please inspect all packages upon delivery.