Hi, welcome to AA
In my opinion you have to weigh your wants out of the clownfish breeding. Raising clownfish fry is no easy process. It requires a steady supply of small foods such as artemia, green water, small baby brine shrimp, etc. constantly. Also meaning you'd already need a supply going at this point. A lot of people also use sponge filters to keep some filtration but not enough to cause any harm to the fry. You also have to find a place who will take the fry after a few months to a year, and be able to raise many of them for that long. Not to discourage you, but to let you know that it is a lot of work and time devotion.
That being said, when my clowns lay eggs I just let them go. Gives mom and dad something to do and a free snack. No, none will live in your main tank if you don't remove them.
If you seriously want to attempt raising them, I would consider purchasing Joyce Wilkerson's Book "Clownfish", which is usually considered THE book for clownfish breeding.
http://www.amazon.com/Clownfishes-Jo...5921459&sr=8-1
Best of luck!
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-Lindsay
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