DRAGONLORD just have something for you on that i havce my breeding pair of blue acars in a totally overstocked 55g with 2 9" pacus and 3 other blues. ammonia is in dangerous levels and so is nitrate. but they still breed every 2 weeks, they just cant stop doin it, i think they are sex fiends.
actually i do a 40% water change twice a week. and they started to breed in that tank so they must like something about it. but yea all i need to do is get rid of my pacus which i were told were silver dollars at petco when i was inexperienced, but i later learned that they were paucs, and now no 1 wants them and i cant jsut put them into a lake and i cant buy a new tank bkuz my parents wont let me.