Terrified of ATO failure

[Mr Cypher]

I use the Auto Aqua Duetto haven't had an issue yet on my 130 optical sensor just need to remember to wipe it off at waterchange time

 

[desertrat505]

I use a gravity fed ATO with a 5 gal. reservoir and an eshopps universal float valve.

 

[neonreef3d]

I use a gravity fed ATO with a 5 gal. reservoir and an eshopps universal float valve.

same exact setup I have!! I use a pro-reef salt 5 gallon for the RO reservoir ..

 

[animan]

Tunze ATO. No issues with mine for the past 7 years.