from the day they lay eggs to the day they hatch is usually 6,7,8 or even 9 days depending on the tempreture of your water. I had them hatch on the 9th day before. They hatch after the lights off. I had them start hatching 5 minutes to 2 hours after the lights off. Then you need to collect the larvae and put them in a seprate tank and feed them live Rotifers for few days.. first you can just watch them lay eggs and hatch.. Watch the eggs and see how they change color and then you will start seeing eyes. Next Thursday look and see if the eggs are still there. Get a flashlight ready and keep it handy. Turn the pumps off before lights off and after 30 minutes or an hour take the flash light to other side of the tank (no direct shine on the eggs) and wait and see if you see any larvae show up under light. They follow light after they hatch. You can scoop them (if any) under light and put in a seprate tank just for a practice. If they did not hatch that night then do the same the following day.