I finally found a hardwater source in my house (I have a whole house softening system and have avoided the tap water for my fish). I've been using Poland Spring due to the softening system.
So, I tested my municpal tap water (hard water) with API test strips. The readings are general hardness was 180ppm and carbonate hardness was 240ppm. Also pH was around 8.
I plan to condition with Prime or Stress Coat Plus. Is this water okay to for my bettas?