Apex Controller System bags The pH probe is double-junction

The pH probe is double-junction as well so it holds calibration longer and has a longer lifespan than single-junction probes

Connects to our FMM module included in our FMK

The Neptune MOS replaces the previous OS-1-M and features an updated design that fits into tighter spaces and helps to prevent water incursion into the sensor

evening tea

AUTO TOP OFF KIT (VERSION 2) (ATKV2)

Apex Controller System bags The pH probe is double-junctionNeptune Systems A3 Apex System The control you want, monitoring you need, and with room to grow for the everyday hobbyist 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 Control up to 13 individual power connections with the Energy Bar 832 ONLY power bar on the market to be ETL UL certified specifically for aquarium