I have a small pond with 2 large + 3 medium Koi. The chart that comes with the feeder is useless as it is based on the size of the pond and not the number of fish. Feeder only holds one cup of medium sized pellets. At a setting of 27 it will feed my fish for 4 days and most of the feed will be thrown away within 1 or 2 hours. I just bought a second feeder to feed one in the morning and one in the evening. Seems like a setting of about 17 1/8 cups would drop food and feed my fish for 7 or 8 days. It rained quite heavily one night and the pellets stayed dry but I covered it with a gallon zip tucked underneath to allow food to fall off just to be on the safe side as it doesn't appear to be waterproof. That should work for a week's vacation.
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