My question involves landlord-tenant law in the State of: Florida

We have been given our annual lease renewal options which include a 19% increase as the cheapest option on the 11 month renewal. I always thought there were limits to how much our rent could be raised on a lease renewal?
Secondly, they are requiring renters insurance, at a minimum, providing for limits of liability to third parties in an amount of no less than 100K per occurrence.
I've heard of the requirement for renters insurance which is quite common, but where do they get the "liability to third parties of no less than 100K per occurrence"? There's no way our apartment has a value of that as if sold as a condo (940 sf.), I'll guess it probably couldn't fetch more than 60K. Are they trying to get the tenants to cover insurance they would otherwise have to carry themselves and is this legal?
All I am familiar with is renters insurance to cover our own personal belongings etc....