Not to argue with Bang Guy, because he definitely knows what he's talking about, but if you check out page 188 of the infamous Wilkerson clownfish book under the heading "hatching" she states that you can acheive a higher hatch rate by leaving the eggs with the parents, and it's less stressful for the dad. "The eggs usually hatch about eight days after they are laid, within two hours after darkness." I also read in another book that the fry are drawn to light, so if you want to try and save some, here is what I would do; Watch the eggs which should be a pink or orange shade, when they turn brownish they are within 3 days of hatching. Plan your lighting ahead of time. Make sure during those three days you have your lights on and off at the same time every day for exactly 12 hours. Every night when you turn the lights off, turn off all filtration so the little guys don't get sucked in. watch under the cover of darkness (hopefully you have a moonlight or something for viewing) for at least 2 hours, 2 and a half to be safe, if you're feeling ambitious. After that long, if they haven't hatched, they probably aren't going to that night. Turn the filtration back on. On the night that they do hatch, shine a flashlight on the surface of the water, the fry will flock to it, and you can catch them in a container-don't use a net, it will kill them, they're too fragile. Leave the filtration off for the night and drape something over the tank to keep it dark. when you get up in the morning shine the flashlight on the surface again and collect any that you didn't get the night before. I would also use water from the tank they are in for your rearing tank. 3 gallons in the bottom of a 10 gallon aquarium should suffice, with an airstone and sponge filter (if you can find one) and a small heater with no light or cover the light with black electrical tape so the fry are not drawn to that light and, well, fry. Bottom and sides of rearing tank should be black and dark, with no harsh lighting at the top, no cover at all with just normal room light leaking in is sufficient. By the time you get to this point you should have wilkerson's book to proceed with. You are going to lose some to other fish eating them as they are hatching, but you should be able to save some of them this way, it certainly won't be easy though. Hope this helps.
Ooops! I just noticed you posted your question on jan 25, you may already have had a hatch, I hope I wasn't too late.