I'm going to be on vacation for two weeks next month. I'm hoping to hire a neighborhood friend's son to come feed my 6 koi. Typically I feed then a handful of food twice a day. However, they also seem to chow down on natural food in the pond every day. So the question is; would it be OK to ask the boy to only come once a day? If so, should he give them two handfuls at that time, or only one? TIA