ATO system recommendations

[SinkyShippy]

I have a 20 gallon tank with an ATO reservoir. I’ve previously used the Hydor smart level controller but I haven’t been to happy with it as it always fills past the alarm causing it to beep continuously. Does anyone have any recommendations for any other ATO systems?

 

[Dolelo96]

I use a Tunze 3155. It has two sensors..I’ve never had any problems

 

[GoldeneyeRet]

Tunze

 

[Peace River]

Tunze has some great models. I use the AutoAqua Smart ATO which has an optical sensor and I have been happy with the performance.