Looking for a reliable plug and play ATO

[lastlight]

Originally Posted by Pescador

For another option check out Blue Line's Tsunami AT1 I've used one for 8 years literally without any maintenance. No moving parts it uses air pressure.
You should be able to find one for $60-$70
Don't use the suction cup, zip tie it to a bracket.

From their site:

>> When the water level in the sump drops 1", the AT1 will turn on the reservoir pump and turn it off after the sump fills up 1".

That could allow for some significant salinity fluctuations depending on the size of the sump/compartment the sensor is in. What I like about the Tunze is the precision.