Don't expect much growth in a tank that is only 2 months old. Tanks need to be 'mature' to really be stable and show good growth (which is still quite slow!). A mature tank can take 6 to 12 months to evolve. Don't rush it, you're doing just fine.
Secondly, don't chase pH! Your pH at 7.94 is perfectly OK and pushing it up artificially really won't help much at all. Your pH is higher than mine (7.85) and I never worry about it at all (see photo of my tank below). Unless pH gets WAY out of hand, don't worry about it.
The parameters you need to stay on top of are:
temperature: usually easy, but if it gets out of hand it can be deadly
ammonia: again, pretty easy, unless something big dies in the tank and you don't notice
alk: if you have stony corals, this one is critical
Ca: not as much as alk, but still very important
salinity: again, pretty easy but harmful if it gets too far out of line
Mg: really easy but essential for skeleton building
pH: super easy, I never even test for it. Only an issue if you have really high CO2 in your house
There are a few more, but you get the idea.
This was from about a year ago. My pH never changes much (7.8 to 8.0). And not that orange digi near the middle bottom is easily twice as big. And my RFA's have had 2 rounds of babies. You can see the small (18 months old) and tiny (6 months old) ones. So the pH hasn't been an issue.