place a glass divider between the two fish, (yes it is normal for the male to be mean to the female but when the time is right they will breed then remove the female like the beta. the male raises the young; that is when the male will try to kill the female.no turbulence.. when the male builds the bubble nest for the eggs are blown into this..filtration will suck up the babies (sponge filter to the size of your tank is best)