water parameters a
Ammonia 0 ppm (no surprise there since the tank is so clean, new stones,
etc)
Nitrite 0 ppm
GH & KH rnage 50 ppm
pH is high at about 7.6 (usually it is 7.0)

Could this pH spike be causing the foggy water and the angel's stress?
Will the tank cycling with the bio filter fix this on it's own?