I keep my koi indoors during the harsh winters, and this feeder works fine with the pelletized food I use. I've had no issues with it, and it works reliably. Other buyers who use this feeder outdoors have concerns about rodents accessing the feeder's contents, and some have posted ways to address this, but for indoor use, I can say the feeder itself is nicely made and works well.
Rating: [5 of 5 Stars!]