this KRC setting will cause the decay of biomass instead of growth.

Notice the stoichiometry of 1.0 before Biomass. As the Biomass is on the left-hand-side of the equation, this will be -1.0 * rate.

Therefore, we multiply -1.0 on the rate expression, to get the correct rate.
loose the error tolerance and shorten the max nonlinear iteration.
max_time_steps set to 8640 sec.