Florida Building Code 2020 4126.96.36.199.10 Main drain outlets.
All pools shall be provided with an outlet at the deepest point.
Florida Building Code 2020 4188.8.131.52.10.2
Outlets shall be covered by a secured grating which requires the use of a tool to remove and whose open area is such that the maximum velocity of water passing through the openings does not exceed 11/2 feet per second (457 mm/s) at 100 percent of the design recirculation flow. Main drain covers/grates shall comply with the requirements of ANSI/APSP 16 and the water velocity of this section.