Pelleted grain, a mixture of ground wheat, corn and soy with a protein level between 14 and 18%, and molasses are
used to sustain carbon:nitrogen (C:N) ratios above 15. Water stability of pelleted grain needs to be between 15 and 20 minutes. This provides an inexpensive organic substrate on which bioflocs can develop, in addition to increasing C:N ratio. Shrimp feed could be high in protein (35 to 40%) or low in protein (29 to 30%). Molasses can be applied two or three times weekly at 15-20 kg/ha.