A3 Apex Jr Aquarium Controller System

2026-03-10T13:37:11+03:00

Type: Smart Controllers
Price: 300.000

A3 Apex Jr: Aquarium Monitoring for All

Essential Monitoring of Temperature, pH, and Water Levels

Leak Detection Sensor Included

Expandable: Add on other Apex Modules to Expand Your System

Built-In WiFi & Remote Access via Apex Fusion

Notifications when Parameters Fall Outside Set Safe Zones

Why Do I Need an Aquarium Monitor?

An aquarium monitor is a valuable tool for any aquarist. It serves as your eyes and ears, continuously checking and reporting the vital parameters that ensure the health and stability of your aquarium. By keeping track of temperature, pH, water level, and potential leaks, an aquarium monitor:

Prevents Disasters: Early detection of abnormal conditions, such as temperature, allows for immediate intervention, preventing potential damage and loss.

Saves Time and Money: Automated monitoring reduces the need for frequent manual testing and can help avert costly repairs from unnoticed issues.

Enhances Peace of Mind: With real-time alerts and remote access, you can be assured that your aquarium is functioning well, even when you're not home.

Why Should I use the A3 Apex Jr. on my Aquarium?

The A3 Apex Jr is an affordable, entry-level monitoring solution that keeps tabs on only your most essential tank needs. Track temperature and pH plus water level and leak detection to protect your aquarium and home.

The A3 Apex Jr features two AquaBus ports that will allow you to connect additional modules and accessories to continue building out your control system. This gives you the option to add on what you need, when you need it. Want to add Salinity monitoring? Just connect a PM2 module and conductivity probe. How about control and monitoring of pumps, lights, and other equipment? Pick up an EB832 Power Bar.

The Apex Fusion App - Apex Fusion is a free cloud-based service that allows you to connect to your Apex from anywhere in the world! This user-friendly platform allows effortless monitoring of your aquarium's vital parameters. With features like drag-and-drop customization, easy-to-use task functions to set up new equipment, and real-time alerts, Apex Fusion ensures that maintaining optimal conditions in your aquarium is hassle-free and efficient.

What Else Do I get with the A3 Apex Jr?

Aside from the A3 Apex Jr. itself, included in the box are four monitoring probes/sensors that give you temperature, pH, water level, and leak detection.

Temperature Probe: If the temperature falls outside of the specified safe zone, you'll receive a notification so that you can correct the issue. Crucial for detecting malfunctioning heaters early, allowing you to fix the problem before it's too late.

pH Probe: Knowing your aquarium's pH is helpful in a number of ways, but particularly useful if you're dosing two-part or kalkwasser to your aquarium. For example, the pH probe might help you detect a potential overdose due to a stuck dosing pump.

Magnetic Optical Sensor (MOS): This low-profile level sensor can be used for a number of purposes such as a high or low level warning in your sump or dosing container. It can be mounted on any type of material up to 1/4" thick.

LD-2 Leak Detection Sensor: Protect your floors by placing this sensor inside your aquarium stand or any other flat surface where an overflow may cause issues. If water ever touches the sensor, your A3 Apex Jr. can notify you so you can take action.

What's Included?

A3 Apex Jr Base Unit

Power Supply

Temperature Probe

pH Probe

MOS Magnetic Optical Sensor

LD-2 Leak Detection Sensor

Calibration Solutions (7 & 10)

Mounting Screws

Getting Started Card