Update: Most of the fry are free swimming now. Yesterday I put the first batch of baby brine to hatch. I thought they would hatch today but they didn't. I'm planning to set up another hatchery to have food for day after tomorrow and so on. However don't have any food for them today and I can only hope the brine shrimp will hatch by tomorrow morning. I been doing some research and I found that the only food I can make for them today would be the egg yolk. Should I feed them yolk and hope the shrimp hatch or just leave them be by the morning. I also considered crushing the flakes but idk how to get it to that fine power and I'm not able to go to the fish shop to buy any so any help would be greatly appreciated. Also when should I add the filter to the tank?