Liquid level sensor for ATO

Gaoweihd · Nov 30, 2023

Ciao Reef Enthusiasts!

I'm curious if anyone here has experimented with using the Neptune liquid level sensor as an ATO solution. The concept seems straightforward – controlling a pump based on the lower threshold and setting an upper threshold for alarms. Plus, adding a second sensor could enhance safety, right?

I'd love to hear your thoughts or experiences on this. Has anyone found it to be a good alternative? I'm asking because my Tunze ATO has been a bit on the fritz lately, and I'm exploring other options. Looking forward to your insights and suggestions!

Raptor72 · Nov 30, 2023

From the posts that I've read, the reliability is just not there yet. I bought 2 when they came out, and they both failed. I had one replaced and still need to make a claim for the other. I've seen lots of similar posts on several forums.

Gaoweihd · Nov 30, 2023

Raptor72 said:
From the posts that I've read, the reliability is just not there yet. I bought 2 when they came out, and they both failed. I had one replaced and still need to make a claim for the other. I've seen lots of similar posts on several forums.

I see. I guess they're only good for monitoring water level in the reservior then.

leonardomanzano · Oct 5, 2025

Hey! has this changed?
Have they become reliable enough to be used as an ATO?
I saw this item in the ATO section in BRS

Sean Clark · Oct 5, 2025

The one that I have faild in less than a year in RODI water, so no other factors aided in its failure. I recieved mine for free from Neptune systems. I would not recomend.