The eggs will hatch in 7-9 days depending on temp. and clown species. The day before they hatch the eyes inside the eggs will be very silvery and the yolk sac will be almost gone. The babies will hatch about 1.5 - 2 hours after the lights go out. (I usually turn the lights off a little early that night, so I don't have to stay up late) An hour after the lights are off(that includes all other lights in the room) turn off all pumps and powerheads. An hour after that shine a flashlight down into the tank. The babies will follow the light beam up to the top. Then you gently scoop out the babies with a tuperware container or something and transfer them to the fry tank. The fry tank is usually a 10 gal tank with blacked out sides, filled with about 5 gal of water from the parent's tank (done earlier that evening). The fry tank needs a heater (with tape around the light) and a gently flowing airstone. Since you already have rots, the rest should be easy.