My tank is roughly has a pH of around 6.5. My cherry shrimp do fine and breed like crazy! I have noticed that my Boraras try to eat the shrimplets very often. They will pick them off the glass but even the smallest of shrimp are too large for my tiny fish. I think you may loose a very small number of the newborns to the Boraras, but it make no difference once the shrimp start breeding.