Hi, Stuart again i guess i am a impatient person , but i am hoping the cycle will be complete within a week. Then i will be going out to get my fish . I feel correct filtration is very importent ,since i am getting possibly 9 or 12 fish(all juveniles). I would appreciate some feedback or ideas, from any person that feels they could contribute. My thoughts are to have 1 used as chemical and the other used as biological, i wonder which one should be the larger one ( aquaclear 70, and 50). Thanks again in advance Stuart. P.S. I believe that this forum is the best and most knowlegable of all the chiclid forums on the net.(idon't understand why there isn't more traffic) please forgive my spelling,i'm 65 ,retired ,and maybe a little brain dead.