Are you currently keeping the male betta and female bettas in the same tank? If so, I would strongly advise you to remove either the male or the females.
Bettas are extremely aggressive to members of their own species. Males are notorious for this, but females can be just as much. The two genders should never be housed together, IMO
. It is possible to keep a group of females (odd numbers is best) in a sorority, but the male needs to be removed from the equation.
Beautiful tank, by the way.