Why Your Tub Is Draining Slow (And What to Do Right Now) A slow draining tub fix is something most Utah homeowners can tackle themselves — if they know where to start. Quick answer: How to fix a slow draining tub Remove the drain stopper and pull out any visible hair or debris by hand Plunge the drain with 2 inches of hot water in the tub and the overflow covered with duct tape Try baking soda and vinegar — pour 1/2 cup of each, wait 10–15 minutes, flush with hot water Snake