NEPTUNE SYSTEMS APEX TEMPERATURE PROBE ESV Aquarium Products super-sensitive leak detection probes and

super-sensitive leak detection probes and place them where you want that oh-so-important protection for your floors

Water testing is critical and necessary for aquariums

ClariSea Installation Height vs Filter Life

G5 Diffusers custom-designed to fit G5 models only

Precise control of water movement

NEPTUNE SYSTEMS APEX TEMPERATURE PROBE ESV Aquarium Products super-sensitive leak detection probes andReplace 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.