Well part of this process is supposed to precipitate out the carbon in forms that can eventually be subducted (as the current natural carbon cycle does). I ass

Well part of this process is supposed to precipitate out the carbon in forms that can eventually be subducted (as the current natural carbon cycle does). I assume that the rate at which the carbon is sequestered by this method is also driven by the level of ocean acidity, as more CO2 is pulled out of the ocean the acidity will drop and so will the reaction rate will also drop ... this means that there's a natural negative feedback here - whether it's enough to "do the right thing" is probably still a question for science