I have five goldfish and was hoping to use this feeder during the holidays when I go home. It's so-so with flake food and with the little floating pellet food it's works alright if you adjust it to the lowest feeding position. With both types the food falls out little by little to the side before it reaches the vertical position so it doesn't really provide en even feeding. It's even more pronounced with the pellet food because it just rolls out. I also tried to time mine and it's not evenly spaced time wise either. I ended up making my own adjustments inside until it fed them correctly which involved breaking off the stops on the inner tube and taping the opening a bit.Overall I'd just recommend going with one that isn't a rotating drum. Not a particularly great design. Just get one that is actually on a timer and drops the food down at designated times.