I usually count 8 days after my clowns lay eggs if my tank is a consistant 80 degrees. The day they lay I do not count. So if they lay on Sunday day 1 is Monday so my collect night is the following monday. When all the eyes turn silverI know they are going to hatch. So on hatch night I usually wait until normal time my lights go out then I make sure all ambient light is blocked out except for the led on the catcher. This includes the light in my sump and all light in the room! I turn off all water movement and wait. I learned not to use a flashlight to check on the hatch! This seems to delay the process. I will sit in my dark family room where my tank is and watch the little clowns start swimming for the LED. Hope it goes well for you.