When taking the fish out of their tank into a new envionment,its liek a whole new world to them.Its like this:You dont want to have new kids right away after moving into a new home.Right?You would probobly have them after you settle down a bi and get used to your new home.Its the same thing with clownfish.
And IME having other clownfish in the tank with the pair you are wanting to spawn,can end in problems.IME when fish are spawing they become very aggresive and will some times kill other fish if they come close to the nest!If it were me I would remove the other 5 fish and place them in a 10-15 gallon tank for a bit.
Let me know if you need more help!