Yet again assumptions that leads you wrong. I rest my case, I will get back with more accurate calculations of production based on 600 000 fingerlings per tank when I have some time. You are simplifying again to get the desired result.
RD: can you explain why you multiply by 36/48? I thought there are 2 tanks per APM so shouldn't the 600,000 fingerlings per tank be multiplied by 96 since there are 48 APM per building right ?
Also why did you use the 100 fingerlings per kg (= 10g per fingerling) being stocked to calculate the final production number of say 18MT/APM? Isn't the final production or capacity based only on the final tonnage of fully grown prawns being sold which should be about 0.5 kg or so per Giant Sweetwater Prawn (my guess)?