Deciding on an ATO

[Sobo's Reef]

Hey guys.. does anyone own either the Tunze Nano ATO or the Tunze 3155?? I'm trying to decide which one to buy but I'm so indecisive. I hear the 3155 is way better but it's also $100 more than the nano. Any suggestions??


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[art13]

The difference I believe is the sensor, I have the bigger one and it's great, the main lvl sensor is optic, and also comes with a float switch as a backup. I think the pump may be bigger as well, I've had mine for 2 years with no issue, the only problem people really have with it is if you kill the power and turn it back on, it will automatically pump water in for a certain amount of time when it resets.

 

[Sobo's Reef]

The difference I believe is the sensor, I have the bigger one and it's great, the main lvl sensor is optic, and also comes with a float switch as a backup. I think the pump may be bigger as well, I've had mine for 2 years with no issue, the only problem people really have with it is if you kill the power and turn it back on, it will automatically pump water in for a certain amount of time when it resets.

How big would you say the sensor box is? I'm tryna figure out if it would even fit into any of my chambers


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[art13]

Maybe 1-2 inches that it sticks out, rpunghly 4-5 inch circle, it's a magnet mount kinda like some powerheads

 

[Sobo's Reef]

I caved and bought the 3155 model! Thanks for your help!


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