Swirl Away is a hot tub and whirlpool pipe cleaner. It removes biofilm and other unwanted buildup.
For Hot Tubs: Add one hour prior to draining. Remove the filter and add with the jets on (air controls off)
For Whirlpool Baths: Fill the tub with hot water. Add Swirl Away, allow it to circulate through the jets for 10 minutes, and then drain the tub.