i started a small aquaponics system a few years ago,, it grew into filling my basement..i've got an 8' kiddie pool with around 150 fish.. i bought 120 3" yp last spring and most are harvestable.. about 50 tilapia from last year are ready as well..i've been using a mix of aquamax feed, but mostly high protein, supplementing with crayfish, producing several hundred a year easily..tilapia have had a couple of hatches, but only 9 or 10 escaped the yp (and a couple bg) into the sump tank..i've got a smaller setup that i have 150 or so rosy red minnows, but they grow to slow..so they'll be fed to the big tank after the last hatch grows a bit
so my smaller setup will be to start 50 or so at a time, and move them aas they grow
i'm pretty close to my goal of being able to get 1 meal a week from my basement.. just replanted the growbeds after spring cleanout, topping them off with more gravel (i hauled 3+ yards down there!)