Cascade does exactly the thing it suppose to do

The plot shows the evolution of ozone on the grain surface along with ozone evolution within the ice, buried population.


Cascade does exactly the thing it suppose to do, i.e.:
DO3 + O2 -> OD + ...
OD + CO -> D + ...
D + O3 -> OD + ...
OD + H2 -> H + ...
H + O3 -> HO + ...
OH + CO -> H ...
proof done by the log (should i post it here???):
accretion event: 9999999 got OD as the product of DO3_O2, grain popSize: 6699852
accretion event: 9999999 got D as the product of OD_CO, grain popSize: 6699852
accretion event: 9999999 got OD as the product of DO3_O2, grain popSize: 6699852
accretion event: 9999999 got H as the product of OD_H2, grain popSize: 6699853
accretion event: 9999999 got OH as the product of HO3_O2, grain popSize: 6699853
accretion event: 9999999 got H as the product of OH_CO, grain popSize: 6699853

BUT:
I little concern about timing, it is interesting, how much does it takes for this little cascade to happen at first, and second is: I THINK that there suppose to be some accretion events to happen during this time, that would obviously alter this cascade thing...