Pour entire 8-ounce bottle into hot tubs up to 500 gallons.
Jet Blazt is used prior to draining your hot tub for cleaning. Remove all filters and open all valves. Maintain a temp. of over 100 degrees. Pour in the jet blazt and run the jets on high speed for an hour to push out bacteria that could be in the plumbing. Drain and refill the spa after use of this product.