Neptune Systems Trident and A3 Apex Pro Controller System Bundle
PLEASE NOTE – UK VERSION IS SUPPLIED WITH Energy Bar 632 not 832
Core control and everyday monitoring.
The A3 Apex System offers the control but scaled back monitoring with room to grow for the everyday aquarist.
| Specifications |
|---|
| A3 Apex Base Unit |
| 3 FMM Ports |
| 6 Switch Digital Input |
| 2 Aquabus Ports |
| 1 pH/ORP probe port |
| 1 Temperature probe port |
| Both WiFi & Ethernet compatible |
| New built-in audible alarm |
| Expandable |
| Track temperature and pH with included lab-grade, double-junction probes |
| Monitor water level with new MOS sensor |
FAQ
What is the difference between the UK and international versions of this controller?
The UK version is supplied with the Energy Bar 632, while international versions may include the Energy Bar 832.
Is the A3 Apex compatible with both WiFi and Ethernet connections?
Yes, the A3 Apex is compatible with both WiFi and Ethernet connections.
Can the system be expanded with additional sensors or modules?
Yes, the system is expandable and supports additional sensors and modules through available ports.

Faith Terry –
The A3 Apex is reliable and easy to set up. The built-in audible alarm helps catch issues early. I use it to monitor pH and temperature, and the probes are accurate. The expandable design allows me to add more sensors later without replacing the unit.
Heather Tucker –
Works well for my small reef tank. The interface is simple and the temperature and pH readings are consistent. I appreciate the dual probe setup for better accuracy. Slight learning curve with the digital inputs, but it’s manageable.
Liam Alsop –
Great value for everyday aquarium monitoring. The system is stable and the alarms are effective. I’ve added a water level sensor and it works seamlessly with the existing setup. No issues so far with connectivity.