The Tunze 3155 Osmolater is a universal Auto Top Off unit. The Osmolater uses an electronic eye to maintain water levels which has no moving parts so it's not susceptible to getting stuck on or off due to salt creep like float valves are. *New* Convenient magnet holder for easily low profile attachment of probes.
Electronic eye maintains water level.
Secondary float switch for added safety.
Audible alarm if secondary switch is activated.
Multiple mounting brackets that will work on almost any tank or sump.
Adds slightly more water than is needed which stops small waves from turning the unit on or off continuously.
Includes a quiet metering pump.