You only need to adjust it after mixing the food.
6.8 is where you want the pH for soil.
You are not far off but might be low enough to lock out a couple minerals.
Next feeding maybe mix enough to flush out the soil a little bit. Water until you get about 25% drainage and then remove it and check ppms and pH of the run off.
I would suggest just feed 1/2 strength for now. The Ocean Forest should still have some nutrients in it.