Description
The A3 Apex Jr is an affordable, entry-level aquarium monitoring solution that keeps tabs on your most essential tank parameters.
Tracks temperature, pH, and water level, and includes leak detection right out of the box. Two AquaBus ports let you expand the system over time — add salinity monitoring, an Energy Bar 832 for equipment control, Trident testers, and more.
Includes: 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.
Built-in WiFi and remote monitoring via the Apex Fusion app (iOS & Android).
Shipping See current rates and ship days.
Shipping & Returns
- Equipment and dry goods ship at their own rate. Free shipping at $349 or more applies to qualifying livestock only — corals, fish, inverts and live copepods. The $10 box & handling fee is a livestock packing fee and does not apply to dry-goods orders.
- All sales are final on equipment and dry goods. We are a retail store, not the manufacturer.
- Register your product with the manufacturer and keep your receipt — their warranty is how a faulty unit gets replaced, and they are faster at it than a shop could be.
- Not sure who to contact for a warranty claim? Call us and we will point you to the right place.
Ships from our Key West store · (305) 850-9949
