I just got my new fahaka yesterday and everything says they need a Ph of 6-7.6 or 7.8 which is dandy but my tap water has a GH 0.5 KH 0.5 and a very unstable PH. So what i do is age my tap with aragonite in a mag350 for a few days and the Ph sits at 8.0-8.1 and a GH of 6/7 and a KH of 8/9 makeing for far more stable water, it's very consistant (I always check) so given the consistant water params would the Ph being slightly on the high side be detrimental to the fish's health/growth?