Please solve for the equilibrium

That’s what some environmentalists said they feared when Planktos, a
California-based concern, announced it would embark on a private effort
to fertilize part of the South Atlantic with iron, in hopes of
producing carbon-absorbing plankton blooms that the company could
market as carbon offsets. Countries bound by the London Convention, an
international treaty governing dumping at sea, issued a “statement of
concern” about the work and a United Nations
group called for a moratorium, but it is not clear what would have
happened had Planktos not abandoned the effort for lack of money.

Here is the whole story.