marian reforms

[Fixiwee]

I have met all the requirements for the marian reforms. Does it take a few turns for it to kick in, or is their something wrong?

Usually if you hit the conditions the very next turn you get a guy in the upper left screen (you know, the script guy) telling you that the Marian reforms have started.

If that does not happen, check your Italian towns. Your Polybian MICs should be destroyed (still in the city) but new buildings available.
If that does not happen either, you did something wrong.