Neptune ATK (V2) – Automatic Top-Off Kit

The new and improved Neptune ATK from Neptune Systems is a fantastic choice for your top off needs.

This unit connects directly to your existing Neptune Apex to top off your salt water aquarium. It is also one of the few Apex products that can also be used as a stand-alone without an actual Apex system.

This is one of the best and safest units on the market for topping off your reef aquarium and dealing with daily evaporation.

Super-simple to install and use!

It is unique in the market as an ATO device with three layers of redundant monitoring and water-level control.

The ATK does the work for you, while at the same time protecting your tank and your home.