I have a 40 gallon long tank that I bred a pair of managuenses in.The male is 10" and the female was 9".The male killed the female last week because she was ready to lay her eggs again and I didn't remove the 300 or so 1 month old fry from the previous spawn.My question is,if I sell the male,will the 300 or so half inch fry keep the tank cycled or will the bacteria die off? I am going to get rid of the male and just raise the fry.