I'm going to try HM. But what should I use to separate the males and the agresive females? I'm going to try and keep the pesfull females together in a 20 gallon tup. But what containers should I use for the males? 1 gallon or more is preferable but I'm in canada and we don't use Gallons. How many leaters is ok? Also what do you use as containers for the fry?