I need advice in setting up an aquarium for large angel fish (Regal,Flagfin,Emporer Angelfish)...Cause i face this problem(fin rot,Their Fin Start to rot rapidly)while other fishes in my tank are not affected at all..but only this Angelfish seem to be infected (fin rot).I have Orbi batfish,tomato clown,maroon clown,percula clown,blue Demsel,blue tang,yellowtang,banded damsel,Domino Damsel,Coral beauty..and so on.....but none of them are facing any problems...all of them are doing fine...except for the Angelfish...They seem to do fine for the first week ...but on the second week..thats where te problems start...Am I the only one going through this problem..or is ther anyone else going through the same problem....Please Help