Short answer is, "No."
Buffer isn't used to control pH. pH in a marine aquarium is controlled by three ingredients: Alkalinity, calcium, and magnesium. The concept of 'buffering' is made by these three when they are in balance. How does a bottle of 'buffer' know which one of these three to adjust? It doesn't/can't. It's really a non-fix of pH.
If you're pH is not where it belongs, then the water is not properly balanced and the buffer will not balance it. Testing for alkalinity, calcium, and magnesium then bringing these three into balance will bring the pH to where it should be and also buffer it there.
The balance chart and directions on how to balance, is given in this post: What is Water Quality.