Auto Top Off Question

[tkiry1]

What is everybody using for auto top off and especially in larger sumps? I have an Apex Neptune controller but twice those units have gone trash on me.. I would like capability when I am away from home to be able to control it.. Thanks

 

[Red_Beard]

Currently running a diy arduino build, but if i were to buy o e i have been really leaning towards the duetto from xp aqua