ATK V2 Auto Top Off Kit

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. topping off/up).  This alone usually makes the automatic top-off (ATO) device the first piece of automation equipment purchased.

The ironic flip side of this decision is that a faulty ATO device is one of the leading reasons for catastrophic aquarium failure, or even worse, flooding of the house or business.

Not all ATO devices are created equal. Sadly, many ATO on the market are made with cheap components, have very little protection against these catastrophes, and are just a nightmare to assemble and install correctly.

A Complete, Simple, & Standalone ATO!

• 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

What's Included?

• 1x FMM Fluid Monitoring Module
• 2x Optical Water Level Sensors
• 1x Float Valve
• 1x 90° Tube Fitting
• 1x PMUPv2
• 1x 4 Meters Orange RO Tubing
• 1x 3/8" to 1/4" Push Connect Adapter Fitting
• 1x 1/4" Push Connect Siphon Break
• 1x Set Screw for Non-Float Valve Applications