Submitted by melev on Sun, 11/05/2017 - 18:10
One question I'm asked quite often is how does an "auto top-top" work. This is a method that can add more freshwater to your aquarium automatically. The benefit of this is that your tank will remain more stable as salinity remains at the same level because new water is replacing what has evaporated.
Others set up a system so that if they go on a short vacation, the tank will be taken care of.