The Neptune Apex System is the best-value aquarium controller on the market today. Dollar for dollar you will not find a higher-quality controller that gives you more features, is easier to use, or has a larger and more active user base than the Apex.
Apex System comes complete with:
-Apex Base Unit
-Energy Bar 8 (or Energy Bar 6)
-Apex Display Module
-Long-life Temperature Probe
-Standard or Lab ph Probe