This is all I could find
Florida Landlord Network - Renter Rights Handbook
Ending the Lease
There are two different kinds of tenancies, tenancies of specific and of nonspecific duration.
Tenancy of Nonspecific Duration:
A tenancy of nonspecific duration may be either written or oral. Either you or your landlord can terminate such an arrangement upon the following notices: (F.S. 83.57)
Either party must provide notice at least this far in advance of the next rent payment date in order to terminate the lease. This means that with a month to month lease, if either party wants to end the lease October 1st, they must notify the other party on or before September 15th. If one party gives notice on September 17th, that party cannot end the lease, without the other party's agreement, before November 1st.
If you give this notice by personal delivery or certified mail, then it will also satisfy the notice requirement for getting your security deposit back. (see Chapter 3) Be certain to include your forwarding address.
Since your month to month states 30 days then it should be 30 days