NEPTUNE SYSTEMS APEX TEMPERATURE PROBE ESV Aquarium Products G5 Diffusers custom-designed to fit

G5 Diffusers custom-designed to fit G5 models only

Water testing is critical and necessary for aquariums

which we usually have in our aquariums

Reef Crest Mode

an optical sensor for emergency sump level detection

NEPTUNE SYSTEMS APEX TEMPERATURE PROBE ESV Aquarium Products G5 Diffusers custom-designed to fitReplace your Temperature Probe, add one for another tank, or put one on your PM2 PM3 module for temperature compensated readings. Buy this probe if you are: Replacing an old probe. Adding another tank to your system via a PM1. Want to have more accurate readings on your PM2 PM3 modules by adding temperature compensation.