PH is just an indicator of the water parameter.
What you should do is physically see the behaviour of your livestock. Don't worry too much if they stay healthy and look normal to you.
Meanwhile, try raising your MG level if it is too low as it may be a factor on you trying to raise the PH.
Also, remember too much poo poo from your fishes will also lower PH. You will need a more efficient skimmer to counter this effect of fish poo.
As earlier mention, if life stock is fine. Don't over worry yourself.