The Neptune Systems Apex Pro System A3 is a standalone, high-quality, and reliable controller designed to provide accurate monitoring and control of your aquarium.

It is a complete version of the popular Apex aquarium controller.

• Temperature Monitoring
• pH Monitoring
• ORP Monitoring
• Salinity Monitoring (separate probe purchase required)
• 4 x FMM Ports
• 6x Control Outputs
• 3x 1Link Ports
• 2x DC 24 V Outputs
• 6x Digital Inputs
• Audible Alarm Buzzer
• Wi-Fi
• Wired Ethernet
• Liquid Level Monitoring
• Visual Leak Detection
• 4x Variable Outputs (0-10V)
• Expandable

Combine it with the Trident and DOS dosing pumps for complete monitoring and control of alkalinity (KH), Calcium (Ca), and Magnesium (Mg) levels.