A few items to make not of:
Remember that the TP "fry" 1/2"-3/4" received by 4Corners were actually early fingerlings and were capable of eating significantly larger particles compared to late stage BG yolk fry. Also smallest TP fingerlings IMO would not need as high of protein as BG fry. FYI - BG fry 48 hrs post hatch are tiny 3.7-4.2mm when they start looking for food items. In nature this is almost always rotifer size particles 0.05 to 0.1 mm (0.0039in). FYI - Newly hatched brine shrimp are 0.45 mm and 4X to 8X bigger than small rotifers. Ground food to feed newly hatch BG should be a liquid suspension of dust particle sizes. Adding artificial food to feed fry involves high quality filtration to maintain "happy water". Decompositional byproducts of excess fry powder can lower water quality to kill delicate fry. Do good home work so you don't kill several thousand BG fry on your first attempt. As I noted earlier IMO having BG spawning and raising fry in tank containers is probably not your best and least efforts way to fed larger fish.