Auto Top Off system for Red Sea Max Nano

[EastEndReefer]

Hey Guys, looking for a new auto top off system for my Red Sea Max Nano. Looking for recommendations, especially from experience with one fitting this specific tank. Taking into account the available space within the rear sump. I’ve had a JBJ that has lasted a few years and is not functioning as well as it used too, the problem seems to be the controller not the float. Looking for something new and reliable?

 

[JoshH]

Any of these ATOs will work listed in this thread, ideally the Tunze 3152 or the Smart micro ATO, both are fairly small and reasonably priced. I love my Tunze 3155 but it might be a little bit for that tank, not sure on the measurements of the rear compartments myself.

https://www.reef2reef.com/threads/ato-for-a-2g-pico.376537/#post-4602463