I believe they will lay every 2 weeks. Congratulations, mine have just layed for the third time yesterday. I am planning to raise them too. Tomorrow I am replacing the tank, I am not even trying until they (after the move) get settled and start laying again. You shoud pick up "Clownfishes" by Joyce D. Wilkerson, it has everything you need to know about raising fry and culturing food. You can't find it in bookstores, I got mine online. Good luck