breeding angelfish please read and help!!!!?

hiya just wondered if anyone could help me please.

i am new to breeding angelfish and have read quite a bit about them so i purchased 2 golden proven breeding pairs 2 days ago from ebay they are in a 3ft tank all get along fine in the same tank and i was told to divide the tank once they started cleaning the cone one pair seems to be cleaning it alot more than the other pair so i have divided the tank they have a spawning cone and p.v.c pipe to lay on when should i expect baby`s or when will they breed there breeding tubes were showing when i got them and then they went and now there starting to show again any information what so ever on breeding angels would be good help ph is around 7.4 and temp is 28.c