Bromine Closing Dose for a 6-Person Hard-Shell Hot Tub When Levels Are Already High

Bromine test strip held over a 6-person hard-shell hot tub showing high levels before winter closing

Closing a 6-person hard-shell hot tub for winter is straightforward until your test strip shows bromine already sitting high. This guide walks through exactly what that reading means, whether you still need to add more, and how to leave the water in the best possible shape before you button it up for the season.