ATK V2 Auto Top Off Kit - Neptune Systems

A Complete, Simple, & Standalone ATO! If you want a safe ATO system, the Neptune System ATK v2 uses a mixture of optical eyes and a float valve to ensure your tanks water level stays the same while preventing overfills. With the ATK v2 you do not need an Apex Controller since it can be run 100% standalone, however with the addition of an Apex Controller additional features can be unlocked and more accessories can be added to the included FMM module.  Plug & Play Operation Includes Powerful 24V DC PMUP   Two Optical Sensors With No Moving Parts IQ-Fill Water Run-Time Intelligence Mechanical Float Valve Audible Alarms No Apex Necessary Advanced Featured Unlocked When Paired With Apex Controllers   The ATK (Automatic Top-off Kit) is a simple, standalone, and complete solution for replacing water lost to evaporation. The new aquarium hobbyist has many challenges, but none is more annoying than the chore of adding water, every day, to make up for that lost to evaporation (a.k.a. t