Tunze Osmolator 3155 Automatic Top Off


The Tunze Osmolator 3155 is our personal favorite automatic top off on the market today. It is the safest on the market ensuring you always have stable salinity within your reef tank. It includes many build in safety feature redundancies ensuring your tank never floods with RODI water and your floors stay dry!

The Osmolator 3155 is very easy to install and provides complete functionality in a single compact unit. The primary sensor is a mini optical infrared sensor allowing for extremely precise regulation. A secondary float sensor serves as an independent back up. A ten minute timer shuts off the pump is the sensors fail.