The new Automatic Top off unit by JBJ comes a variety of items to make managing your fish tank water levels.
Why is maintaining proper water levels important in an aquarium?
Water will evaporate from your saltwater and freshwater fish tank throughout the day. If you are running a protein skimmer it will decrease efficiency of the remval of excess protien in your tank.
The JBJ ATO will allow you to maintain a constant level of water as well as salinity in your tank once set up. You should pump water to the top of your tank not your sump due to gravity.