We use the feeder for 3 years without interruption for our aquarium. He has given us, especially during holiday periods, always served us well and is completely reliable - of course with the use of granulated food (no flake food). After just 3 years, unfortunately, the time switch has now given up the ghost (just in time for the holidays). Nevertheless, we have again a Rondomatic 400 gained - for the next 3 years or perhaps even longer ...