In theory if you could mix the oceans faster (I know lol), you could begin dissolving the deposited calcium carbonate at the bottom and buffering the oceans wit

In theory if you could mix the oceans faster (I know lol), you could begin dissolving the deposited calcium carbonate at the bottom and buffering the oceans with even more bicarbonate ions. Unfortunately this happens naturally on the time scale of centuries, which is super fast for geology but not great news for corals.