Neptune auto top off failing

[gregzz4]

Originally Posted by Frogger

I have a Tunze 3155 ATO that I have had for 3 years that I have been happy with.

Same here 6-1/2 years and counting. I replaced the pump once as it was getting noisy, but it was still pumping fine.
I added a high sump float to my RKE that will shut off the ATO in the event of a failure but so far so good.