My 9 year old does 100ml/hour for 10 hours at night. I agree with Terry, maybe the pump needs to be recalibrated if it is dispensing too fast. We use the EnteriLite and we've had to send it in for service a few times because it was pumping weird amounts that had nothing to do with what we programmed it for. When the pumps work correctly it is a fairly accurate device, it should be pumping the correct ml/hour for the correct number of hours.