I don't bother with pH. Haven't checked it in at least 25 years. Trying to achieve the "perfect" pH will only throw off the important levels (Calcium and Alkalinity)
For the first year or so, you probably won't have to worry about Ca, Alk, or Mg. Regular water changes should take care of those for you. It is not until you have added stony corals (and they are growing) that dosing those will become important.