Tunze Osmolator 3 Auto Top Off ATO 3154.000

Amazing product

Finally I have great stability for the salinity in my aquarium. No more manual top offs (or being in a rush and forgetting to do one while my salinity spikes). It does seem to go through the reefcan rather quickly but when I check my salinity (once a week) the salinity is always bang on!!! If you’re debating one just do it, you’ll be thankful later on that you got one

Awesome. Works excellent