shall not be arbitrary or discriminatory between similarly situated tenants in the park. A lot rental amount may not be increased during the term of the lot rental agreement, except:
(a) When the manner of the increase is disclosed in a lot rental agreement with a term exceeding 12 months and which provides for such increases not more frequently than annually.
(b) For pass-through charges as defined in s. 723.003.
(c) That a charge may not be collected which results in payment of money for sums previously collected as part of the lot rental amount. The provisions hereof notwithstanding, the mobile home park owner may pass on, at any time during the term of the lot rental agreement, ad valorem property taxes, non-ad valorem assessments, and utility charges, or increases of either, provided that the ad valorem property taxes, non-ad valorem assessments, and utility charges are not otherwise being collected in the remainder of the lot rental amount and provided further that the passing on of such ad valorem taxes, non-ad valorem assessments, or utility charges, or increases of either, was disclosed prior to tenancy, was being passed on as a matter of custom between the mobile home park owner and the mobile home owner, or such passing on was authorized by law. A park owner is deemed to have disclosed the passing on of ad valorem property taxes and non-ad valorem assessments if ad valorem property taxes or non-ad valorem assessments were disclosed as a separate charge or a factor for increasing the lot rental amount in the prospectus or rental agreement. Such ad valorem taxes, non-ad valorem assessments, and utility charges shall be a part of the lot rental amount as defined by this chapter. The term “non-ad valorem assessments” has the same meaning as provided in s.