Feeding Goldfish

I'm conducting an experiment entitled the "Effect of volume on Carassius auratus growth". However, I'm uncertain of how often and how much to feed the gold fish. My experimental setup consists of a ten gallon tub (30 X 20 inches, about 6 inches deep) with five individual containers within, approximately filling a volume of 2 litters each (Mesh basket like). Two fish are in each container while twelve fish are left in the larger volume outside. Yes I have filtration. First, is this an adequate setup? Secondly, what would be the best feeding technique? My professor suggested letting to fish be exposed to an excess amount of food for three hours /twice a day. (I'm using floating pellets so fa... click for more