Neptune Systems A3 Apex Pro Aquarium Controller System
Neptune Systems A3 Apex Pro Aquarium Controller System
Advanced Aquarium Monitoring. Intelligent Automation. Ultimate Peace of Mind.
Take aquarium management to the next level with the Neptune Systems A3 Apex Pro Aquarium Controller System, a premium monitoring and automation solution designed for serious reef aquarium enthusiasts.
Whether you're maintaining a high-value SPS reef, a mixed coral aquarium, or a sophisticated freshwater system, the A3 Apex Pro provides advanced monitoring, intelligent equipment control, and customizable alerts to help protect your aquatic environment.
With expanded sensor capabilities, the powerful Energy Bar 832, and remote access through Apex Fusion, the A3 Apex Pro delivers comprehensive aquarium monitoring and automation in one integrated system.
Key Features
Advanced Water Parameter Monitoring: Continuously monitor temperature, pH, and oxidation-reduction potential (ORP).
Continuous Water Level Measurement: Included 15-inch Liquid Level Sensor provides detailed water depth readings.
Advanced Leak Detection: Included LD-3 Optical Multi-Surface Leak Sensor helps identify unwanted water.
Smart Power Management: Energy Bar 832 provides eight individually controllable outlets with independent power monitoring.
Automated Equipment Control: Program compatible aquarium equipment based on schedules, sensor readings, and customized conditions.
Remote Aquarium Access: Monitor and manage your system through Apex Fusion.
Customizable Alerts: Receive notifications when monitored conditions exceed configured limits.
Wi-Fi and Ethernet Connectivity: Flexible network connection options.
Built-In Audible Alarm: Provides local notification of configured alarm conditions.
Expandable Design: Supports additional compatible Neptune Systems modules, sensors, and accessories.
Comprehensive Monitoring for Your Aquarium
Maintaining stable water conditions is essential for healthy fish, corals, and other aquatic life.
The A3 Apex Pro continuously monitors important aquarium parameters, helping you identify changes and potential equipment problems before they become serious.
Temperature Monitoring
The included temperature probe continuously tracks aquarium water temperature.
Configure your preferred temperature range and receive notifications when readings move outside those limits.
When connected to compatible equipment through the Energy Bar 832, the Apex Pro can automatically control heating and cooling devices based on programmed settings.
Real-Time pH Monitoring
The included lab-grade, double-junction pH probe provides continuous insight into your aquarium's water chemistry.
Track daily pH fluctuations, review historical trends, and receive notifications when readings exceed your preferred range.
Consistent pH monitoring is especially valuable for reef aquariums using two-part dosing, kalkwasser, or other calcium and alkalinity supplementation methods.
ORP Monitoring
The A3 Apex Pro includes a dedicated ORP probe for monitoring oxidation-reduction potential.
ORP readings provide additional information about changes in aquarium water conditions.
Monitoring ORP trends can help identify unusual changes that may require further investigation.
Advanced LD-3 Leak Detection
Water leaks can cause significant damage to aquarium equipment, cabinetry, flooring, and surrounding areas.
The A3 Apex Pro includes the LD-3 Optical Multi-Surface Leak Detection Sensor, designed to detect unwanted water on a variety of surfaces.
Position the sensor inside your aquarium cabinet, near plumbing connections, or in other areas where leaks may occur.
When water is detected, the Apex Pro can trigger configured notifications and automated equipment responses.
This additional protection is especially valuable for aquariums with external plumbing, sumps, automatic top-off systems, and other water-handling equipment.
Continuous Water Level Monitoring
The included 15-inch Liquid Level Sensor (LLS) provides continuous water depth measurements.
Unlike point-level sensors that simply detect whether water is present at a specific location, the LLS provides detailed water level information in inches or centimeters.
Common applications include:
Monitoring sump water levels
Tracking automatic top-off reservoirs
Measuring aquarium water storage containers
Monitoring dosing solution reservoirs
Tracking water levels in mixing stations
Configure alerts and automated responses based on measured water levels.
This added visibility helps you identify unusual water loss, reservoir depletion, or unexpected changes in your aquarium system.
Energy Bar 832 – Intelligent Power Management
The included Neptune Systems Energy Bar 832 provides advanced control over connected aquarium equipment.
Featuring eight individually controllable 120V AC outlets, the Energy Bar allows you to automate compatible equipment and monitor electrical consumption.
Smart Equipment Automation
Program compatible aquarium equipment to operate based on time, temperature, sensor readings, and customized conditions.
Examples include:
Automatically controlling aquarium heaters
Scheduling compatible pumps and lighting
Shutting down selected equipment when leaks are detected
Creating customized feeding and maintenance modes
Configuring safety responses to abnormal conditions
Individual Outlet Power Monitoring
Each outlet provides independent power consumption monitoring.
Track electrical usage and identify unusual changes that may indicate equipment problems.
Energy Bar 832 Features
8 individually controllable 120V AC outlets
Individual outlet power monitoring
3 1LINK ports for compatible Neptune Systems devices
2 DC24V accessory outputs
3 AquaBus ports for expansion
ETL/UL certification for aquarium use
Apex Fusion – Your Aquarium Control Center
The Apex Fusion platform provides a centralized interface for aquarium monitoring, automation, and equipment management.
Access your aquarium information through compatible smartphones, tablets, and computers.
Real-Time Monitoring
View current temperature, pH, ORP, and liquid level readings while checking the status of connected equipment.
Customizable Notifications
Configure push notifications and email alerts for important aquarium conditions, including:
Temperature outside your preferred range
Unexpected pH or ORP changes
Water leaks
Abnormal water levels
Configured equipment and power-related alerts
Advanced Equipment Automation
Create personalized equipment schedules and sensor-based responses tailored to your aquarium.
Historical Data and Maintenance Tracking
Review monitoring trends, log aquarium testing results, track dosing information, and create reminders for routine maintenance.
Remote monitoring and notifications require appropriate network and internet connectivity.
Expand Your Aquarium Automation System
The A3 Apex Pro is designed to grow alongside your aquarium.
Its modular architecture supports additional compatible Neptune Systems equipment and monitoring accessories.
Popular expansion options include:
Neptune Systems Trident: Add compatible automated water testing equipment for important reef aquarium chemistry parameters.
Neptune Systems DOS QuietDrive: Automate compatible dosing and fluid management applications.
Neptune Systems COR Pumps: Integrate supported return pumps for enhanced equipment control.
Additional Energy Bars: Expand the number of controllable outlets for larger aquarium systems.
Additional Sensors and Modules: Add compatible salinity monitoring, leak sensors, and other aquarium monitoring accessories.
Compatible Third-Party Equipment: Integrate select supported equipment from EcoTech Marine, AquaIllumination, Sicce, and Kessil using appropriate Apex-compatible interfaces or accessories.
Additional equipment, modules, probes, and accessories are sold separately.
Technical Specifications
A3 Apex Pro Base Unit
SpecificationDetailsBrandNeptune SystemsModelA3 Apex ProFMM Ports4Variable Speed Outputs4 Channels (0–10V)Digital Switch Inputs6AquaBus Ports2pH/ORP Probe Ports2Temperature Probe Ports1Salinity Probe Ports1 (Probe Sold Separately)Network ConnectivityWi-Fi and EthernetAlarmBuilt-In Audible AlarmDimensions4.75" L × 3.25" W × 5.25" HControl PlatformApex FusionAquarium CompatibilitySaltwater and Freshwater
Energy Bar 832
SpecificationDetailsControllable AC Outlets8Outlet Voltage120V AC1LINK Ports3DC24V Accessory Outputs2AquaBus Ports3Power MonitoringIndividual Outlet MonitoringCertificationETL/UL Certified for Aquarium UseDimensions10" L × 2.25" W × 6.5" H
What's Included
1 × Neptune Systems A3 Apex Pro Base Unit
1 × Energy Bar 832
1 × Lab-Grade Double-Junction pH Probe
1 × Lab-Grade Double-Junction ORP Probe
1 × Temperature Probe
1 × LD-3 Optical Multi-Surface Leak Detection Sensor
1 × 15" Liquid Level Sensor (LLS)
1 × 6 ft AquaBus Cable
pH Calibration Solutions (7.0 and 10.0)
Mounting Screws
Getting Started Card
Salinity probe and additional expansion accessories are sold separately.
Compare Neptune Systems Apex Controllers
Which Apex Controller Is Right for You?
Whether you're looking for essential aquarium monitoring, intelligent equipment automation, or comprehensive aquarium protection, Neptune Systems offers a controller designed to match your needs.
FeatureA3 Apex JrA3 ApexA3 Apex ProTemperature MonitoringIncludedIncludedIncludedpH MonitoringIncludedIncludedIncludedORP MonitoringOptional ExpansionOptional ExpansionIncludedWater Level MonitoringMOSMOS15" LLSLeak DetectionLD-2LD-2LD-3Energy Bar 832Sold SeparatelyIncludedIncludedRemote MonitoringYesYesYesEquipment AutomationWith ExpansionIncludedIncludedExpandable SystemYesYesYes
Explore the Apex Controller Lineup
A3 Apex Jr – Essential Monitoring
An excellent entry-level solution for aquarium owners who want reliable monitoring, leak detection, and customizable alerts.
View A3 Apex Jr – Tritoro Blue
A3 Apex – Complete Monitoring and Automation
Combines essential monitoring with the Energy Bar 832 for intelligent equipment control.
A3 Apex Pro – Premium Aquarium Protection
The most comprehensive monitoring package in the A3 lineup, featuring ORP monitoring, continuous water level measurement, advanced leak detection, and intelligent equipment automation.
Why Choose the A3 Apex Pro?
The A3 Apex Pro offers expanded monitoring capabilities and additional sensors compared with the standard A3 Apex.
Its included ORP probe, LD-3 leak sensor, and 15-inch Liquid Level Sensor provide more detailed information about your aquarium and additional opportunities for automated protection.
Best For: Advanced reef keepers, high-value aquariums, and customers who want comprehensive monitoring and equipment automation included from the start.
Experience Advanced Aquarium Control with Tritoro Blue
Your aquarium represents a significant investment in equipment, livestock, and time.
The Neptune Systems A3 Apex Pro Aquarium Controller System helps protect that investment through advanced monitoring, intelligent automation, leak detection, and remote connectivity.
From maintaining stable water conditions to identifying potential equipment problems, the A3 Apex Pro provides greater visibility and control over your aquarium environment.
Shop the Neptune Systems A3 Apex Pro at Tritoro Blue and experience premium aquarium monitoring and automation.
Neptune Systems A3 Apex Pro Aquarium Controller System
Advanced Aquarium Monitoring. Intelligent Automation. Ultimate Peace of Mind.
Take aquarium management to the next level with the Neptune Systems A3 Apex Pro Aquarium Controller System, a premium monitoring and automation solution designed for serious reef aquarium enthusiasts.
Whether you're maintaining a high-value SPS reef, a mixed coral aquarium, or a sophisticated freshwater system, the A3 Apex Pro provides advanced monitoring, intelligent equipment control, and customizable alerts to help protect your aquatic environment.
With expanded sensor capabilities, the powerful Energy Bar 832, and remote access through Apex Fusion, the A3 Apex Pro delivers comprehensive aquarium monitoring and automation in one integrated system.
Key Features
Advanced Water Parameter Monitoring: Continuously monitor temperature, pH, and oxidation-reduction potential (ORP).
Continuous Water Level Measurement: Included 15-inch Liquid Level Sensor provides detailed water depth readings.
Advanced Leak Detection: Included LD-3 Optical Multi-Surface Leak Sensor helps identify unwanted water.
Smart Power Management: Energy Bar 832 provides eight individually controllable outlets with independent power monitoring.
Automated Equipment Control: Program compatible aquarium equipment based on schedules, sensor readings, and customized conditions.
Remote Aquarium Access: Monitor and manage your system through Apex Fusion.
Customizable Alerts: Receive notifications when monitored conditions exceed configured limits.
Wi-Fi and Ethernet Connectivity: Flexible network connection options.
Built-In Audible Alarm: Provides local notification of configured alarm conditions.
Expandable Design: Supports additional compatible Neptune Systems modules, sensors, and accessories.
Comprehensive Monitoring for Your Aquarium
Maintaining stable water conditions is essential for healthy fish, corals, and other aquatic life.
The A3 Apex Pro continuously monitors important aquarium parameters, helping you identify changes and potential equipment problems before they become serious.
Temperature Monitoring
The included temperature probe continuously tracks aquarium water temperature.
Configure your preferred temperature range and receive notifications when readings move outside those limits.
When connected to compatible equipment through the Energy Bar 832, the Apex Pro can automatically control heating and cooling devices based on programmed settings.
Real-Time pH Monitoring
The included lab-grade, double-junction pH probe provides continuous insight into your aquarium's water chemistry.
Track daily pH fluctuations, review historical trends, and receive notifications when readings exceed your preferred range.
Consistent pH monitoring is especially valuable for reef aquariums using two-part dosing, kalkwasser, or other calcium and alkalinity supplementation methods.
ORP Monitoring
The A3 Apex Pro includes a dedicated ORP probe for monitoring oxidation-reduction potential.
ORP readings provide additional information about changes in aquarium water conditions.
Monitoring ORP trends can help identify unusual changes that may require further investigation.
Advanced LD-3 Leak Detection
Water leaks can cause significant damage to aquarium equipment, cabinetry, flooring, and surrounding areas.
The A3 Apex Pro includes the LD-3 Optical Multi-Surface Leak Detection Sensor, designed to detect unwanted water on a variety of surfaces.
Position the sensor inside your aquarium cabinet, near plumbing connections, or in other areas where leaks may occur.
When water is detected, the Apex Pro can trigger configured notifications and automated equipment responses.
This additional protection is especially valuable for aquariums with external plumbing, sumps, automatic top-off systems, and other water-handling equipment.
Continuous Water Level Monitoring
The included 15-inch Liquid Level Sensor (LLS) provides continuous water depth measurements.
Unlike point-level sensors that simply detect whether water is present at a specific location, the LLS provides detailed water level information in inches or centimeters.
Common applications include:
Monitoring sump water levels
Tracking automatic top-off reservoirs
Measuring aquarium water storage containers
Monitoring dosing solution reservoirs
Tracking water levels in mixing stations
Configure alerts and automated responses based on measured water levels.
This added visibility helps you identify unusual water loss, reservoir depletion, or unexpected changes in your aquarium system.
Energy Bar 832 – Intelligent Power Management
The included Neptune Systems Energy Bar 832 provides advanced control over connected aquarium equipment.
Featuring eight individually controllable 120V AC outlets, the Energy Bar allows you to automate compatible equipment and monitor electrical consumption.
Smart Equipment Automation
Program compatible aquarium equipment to operate based on time, temperature, sensor readings, and customized conditions.
Examples include:
Automatically controlling aquarium heaters
Scheduling compatible pumps and lighting
Shutting down selected equipment when leaks are detected
Creating customized feeding and maintenance modes
Configuring safety responses to abnormal conditions
Individual Outlet Power Monitoring
Each outlet provides independent power consumption monitoring.
Track electrical usage and identify unusual changes that may indicate equipment problems.
Energy Bar 832 Features
8 individually controllable 120V AC outlets
Individual outlet power monitoring
3 1LINK ports for compatible Neptune Systems devices
2 DC24V accessory outputs
3 AquaBus ports for expansion
ETL/UL certification for aquarium use
Apex Fusion – Your Aquarium Control Center
The Apex Fusion platform provides a centralized interface for aquarium monitoring, automation, and equipment management.
Access your aquarium information through compatible smartphones, tablets, and computers.
Real-Time Monitoring
View current temperature, pH, ORP, and liquid level readings while checking the status of connected equipment.
Customizable Notifications
Configure push notifications and email alerts for important aquarium conditions, including:
Temperature outside your preferred range
Unexpected pH or ORP changes
Water leaks
Abnormal water levels
Configured equipment and power-related alerts
Advanced Equipment Automation
Create personalized equipment schedules and sensor-based responses tailored to your aquarium.
Historical Data and Maintenance Tracking
Review monitoring trends, log aquarium testing results, track dosing information, and create reminders for routine maintenance.
Remote monitoring and notifications require appropriate network and internet connectivity.
Expand Your Aquarium Automation System
The A3 Apex Pro is designed to grow alongside your aquarium.
Its modular architecture supports additional compatible Neptune Systems equipment and monitoring accessories.
Popular expansion options include:
Neptune Systems Trident: Add compatible automated water testing equipment for important reef aquarium chemistry parameters.
Neptune Systems DOS QuietDrive: Automate compatible dosing and fluid management applications.
Neptune Systems COR Pumps: Integrate supported return pumps for enhanced equipment control.
Additional Energy Bars: Expand the number of controllable outlets for larger aquarium systems.
Additional Sensors and Modules: Add compatible salinity monitoring, leak sensors, and other aquarium monitoring accessories.
Compatible Third-Party Equipment: Integrate select supported equipment from EcoTech Marine, AquaIllumination, Sicce, and Kessil using appropriate Apex-compatible interfaces or accessories.
Additional equipment, modules, probes, and accessories are sold separately.
Technical Specifications
A3 Apex Pro Base Unit
SpecificationDetailsBrandNeptune SystemsModelA3 Apex ProFMM Ports4Variable Speed Outputs4 Channels (0–10V)Digital Switch Inputs6AquaBus Ports2pH/ORP Probe Ports2Temperature Probe Ports1Salinity Probe Ports1 (Probe Sold Separately)Network ConnectivityWi-Fi and EthernetAlarmBuilt-In Audible AlarmDimensions4.75" L × 3.25" W × 5.25" HControl PlatformApex FusionAquarium CompatibilitySaltwater and Freshwater
Energy Bar 832
SpecificationDetailsControllable AC Outlets8Outlet Voltage120V AC1LINK Ports3DC24V Accessory Outputs2AquaBus Ports3Power MonitoringIndividual Outlet MonitoringCertificationETL/UL Certified for Aquarium UseDimensions10" L × 2.25" W × 6.5" H
What's Included
1 × Neptune Systems A3 Apex Pro Base Unit
1 × Energy Bar 832
1 × Lab-Grade Double-Junction pH Probe
1 × Lab-Grade Double-Junction ORP Probe
1 × Temperature Probe
1 × LD-3 Optical Multi-Surface Leak Detection Sensor
1 × 15" Liquid Level Sensor (LLS)
1 × 6 ft AquaBus Cable
pH Calibration Solutions (7.0 and 10.0)
Mounting Screws
Getting Started Card
Salinity probe and additional expansion accessories are sold separately.
Compare Neptune Systems Apex Controllers
Which Apex Controller Is Right for You?
Whether you're looking for essential aquarium monitoring, intelligent equipment automation, or comprehensive aquarium protection, Neptune Systems offers a controller designed to match your needs.
FeatureA3 Apex JrA3 ApexA3 Apex ProTemperature MonitoringIncludedIncludedIncludedpH MonitoringIncludedIncludedIncludedORP MonitoringOptional ExpansionOptional ExpansionIncludedWater Level MonitoringMOSMOS15" LLSLeak DetectionLD-2LD-2LD-3Energy Bar 832Sold SeparatelyIncludedIncludedRemote MonitoringYesYesYesEquipment AutomationWith ExpansionIncludedIncludedExpandable SystemYesYesYes
Explore the Apex Controller Lineup
A3 Apex Jr – Essential Monitoring
An excellent entry-level solution for aquarium owners who want reliable monitoring, leak detection, and customizable alerts.
View A3 Apex Jr – Tritoro Blue
A3 Apex – Complete Monitoring and Automation
Combines essential monitoring with the Energy Bar 832 for intelligent equipment control.
A3 Apex Pro – Premium Aquarium Protection
The most comprehensive monitoring package in the A3 lineup, featuring ORP monitoring, continuous water level measurement, advanced leak detection, and intelligent equipment automation.
Why Choose the A3 Apex Pro?
The A3 Apex Pro offers expanded monitoring capabilities and additional sensors compared with the standard A3 Apex.
Its included ORP probe, LD-3 leak sensor, and 15-inch Liquid Level Sensor provide more detailed information about your aquarium and additional opportunities for automated protection.
Best For: Advanced reef keepers, high-value aquariums, and customers who want comprehensive monitoring and equipment automation included from the start.
Experience Advanced Aquarium Control with Tritoro Blue
Your aquarium represents a significant investment in equipment, livestock, and time.
The Neptune Systems A3 Apex Pro Aquarium Controller System helps protect that investment through advanced monitoring, intelligent automation, leak detection, and remote connectivity.
From maintaining stable water conditions to identifying potential equipment problems, the A3 Apex Pro provides greater visibility and control over your aquarium environment.
Shop the Neptune Systems A3 Apex Pro at Tritoro Blue and experience premium aquarium monitoring and automation.

