Automatic Makeup Water For Aquarium

Step 5 Hose Holder in Place in Fish Tank

This is a view of the "hose holder" in the fish tank.  We kept it at a depth so the water was about about 1 1/2 inches from the tank top.  When we returned from vacation there were about 2 gallons of water drained from the reservoir and the water level was just where is was when we left!
Since that section of the aquarium lid could not be closed due to the hose holder location we made a plastic cover for this section to reduce evaporation and to keep the fish from jumping out!