congrats, definately a nest and looks like a first try for them. I wouldn't both trying to raise them this time. However; there is a lot you can learn from this first nest.
The eggs will (assuming your tank parameters are stable) hatch in the same number of days easch time. So, keep track of how long it takes for this nest to hatch. You'll need to know how long it takes the eggs to hatch if you decide to raise them in the future. It usually takes 8-12 days and you can watch the fry develop in the eggs, the eggs will start changing color and then you'll eventually be able to see silver reflections (eyes) in all the eggs the day of hatch. They will likely hatch within a few minutes of the tank going dark.
You will need another tank set up with water, a heater and air to try and raise them.
The most difficult part is trying to feed the babies. They eat live rotifers for the first week or so. The rotifers need phytoplankton to survive long enough to feed your baby fish.
You really need to buy the book "Clownfishes" by Joyce Wilkerson. She gives a lot of info on raising your babies and how to grow rotifers etc.
Over time the nests will be better feritlized and larger.
Good luck.
