Oyster shell can be used as alternative calcium source. Utilizing of oyster shell into nano calcium flour can be used to decrease solid waste. The usage of nano calcium flour in feed is important applied as calcium supplements with cherax quadricarinatus. The purpose of this research is to study the effect of nano calcium addition on feeds to increase moulting frequency, survival and growth rate of freshwater lobster. This research has been done during 60 days in fisheries Laboratory, Abulyatama University. Two percents nano calcium addition on feeds gives significant effect on growth rate and very significant effect to moulting frequency of freshwater lobster. Which has moulting frequency 2.71. Where the treatment was not added nano calcium has moulted frequency 1.29. But, nano calcium addition on foods did not affect survival rate.