Hello forum. This is my first post with the site. I have a 30g tank and until recently had no interest in breeding my 2 female angel fish. They are about a year old and about 3in in diameter (body, not fins) they have both been laying infertile eggs on oppisite ends of the aquarium and their aggression increases and causes some minor spats between the 2 otherwise "friends". Currently I have my albino bristlenose, and my 3inch rapheal catfish in witht the 2 angels. I now wish to add about 4 more angels of about the same size to hopefully find a pair. Once I establish a mating pair I will sell/return the remaining 4 angels. First question is what kind of trouble would one expect to run into with 6 maturing angelfish and a possible mating pair? Second question is would I be able to house a mated pair of angels, my bristlenose, my raphael catfish, 3-4 corydoras, and small school of fast swimming tetra? Would the bilogical load be too great? I have a few live plants and I'm running a marineland biwheel filter rated for a min of 30gals and max of 50gals? I also have driftwood to help with the softness. All my levels are fine and fish are perfectly healty and active. (Besides the raphael who only comes out to feed at night haha). I've been doing a 20% water change every Sunday since I've had the tank running. I plan on putting the raphael in my 125gal once I'm sure my other catfish won't be able to eat him. I don't really care if the eggs make it to fry or not. But I would like to to watch them mate and hopefull reduce agression between the 2 angels. Thanks for any help and advice!