I set up a 20 long to breed my peacocks in and avoid hybridization by having them all in one big tank. I have 1 male and 4 female all of same species in this tank and so far so good. The tank has an abundance o hiding places and is way over filtered. Do you guys think this set up will be okay go a few months and how many more do you think could be added. I also do a 50 % water change a week