JD, Your biological father needs to be sent formal notice of the adoption, but does not need to consent. Have him served with the paperwork by a sheriff or private process server and file the Notice of Service with the court.
The instructions for the Florida Supreme Court Form for Adult Stepparent Adoption Form 12.981(c)(1) list the following two forms as required consent forms. The instructions do not include a consent form from a biological parent. You are an adult, therefore you do not need your father's consent.
Stepparent Adoption: Consent of Adoptee; Stepparent Adoption: Consent of Adult Adoptee
I am not an attorney, and do not provide legal advice. The information in this response is readily available online, if you know where to look. If you would like help with document preparation, please contact me at 941-237-0951 or visit my site at www.for-the-people-of-Florida.com