High PH + nutrients questions.

[Brightwhite]

First I'll start off with merry xmas and I'm a little dunk at the moment. Just finished a 20% water change on 200g.

Now first question, ph is sitting at 8.47, and moves between 8.25 and 8.6. Good? Or should I be "tweaking"?

Second, my tank is frag style Sps dominant, anything I can do to help grow other then target feeding every couple days?