Recently I've added 3 Wrasses and I wanted to add an automatic feeder to my 90 Gal. The tank has a large glass lid with hinged front panel for access and a 2" plastic strip along the back for light cutouts and cords. This plastic strip is my only access point. I drilled a small hole in the plastic strip and placed the funnel inside. I attached a small section of hose so it extends below the water line. Last I raised the feeder above the funnel and set the timer. First feeding everything worked perfectly, feeder drum spun and pellets floated out of the tube over the next 30-45 seconds. Fish were lined up below the tube like a T. Swift concert within 15 seconds of food hitting the water.