[mike31154]

If it's the pair's first spawn, you're likely better off to wait until a subsequent event. This will give you time to do more research on raising marine fish fry. You will most certainly need a separate tank going and you'll need to capture the larvae the night they hatch in order to move them. Many folks put a tile near the pair to encourage them to spawn there. This way the tile can be easily removed on the anticipated hatch evening & you'll have the whole shebang rather than trying to net them with a light in a tank with flow.

There are breeding forums & plenty of resources on the net for additional info. There's also a book called "Clownfishes" which is a good read for anyone wishing to raise the critters.