Aquarium Auto Top Off Diy. This can be used to protect the pump in your reservoir from a run-dry condition if the reservoir should become empty. An auto top off reservoir is required for all ATO devices as it holds a quantity of freshwater used to top up the aquarium.
Auto Top Off Systems are a great way to automate the addition of water to your saltwater aquarium that is lost due to evaporation. Both the 6 and 10 gallon models features two holes in the top. We really like top off systems like the Neptune ATK or the Tunze Osmolator 3155 but if you are on a budget you will not go wrong with the JBJ ATO.
One for your pumps power cord and the other for your tubing to your sump.
3reef still retains its roots and remains a friendly forum for new people interested in aquariums and veteran hobbyist alike. 3reef still retains its roots and remains a friendly forum for new people interested in aquariums and veteran hobbyist alike. Red Sea Max E 170 - 43 Gallon Complete Reef System Black. How I built my Auto Top Off System.