Automatic Top-Off Kit (Version 2) - FMM, Water level detection mechanism, PMUP (version 2), 24V 36W Power Supply Universal, 4M Orange Tubing

The Neptune Systems Automatic Top-Off Kit v2 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. topping off/up). This alone usually makes the automatic top-off (ATO) device the first piece of automation equipment purchased.