Directions for use: 1. Before initially using Brominating Tabs in your spa or hot tub, you will need to add 1/2oz of sodium bromide for each 100 gallons (380L) of water. The same treatment should be followed each time you drain and refill your spa or hot tub with fresh water 2. Introduce 3 tablets per 300 gallons (380L) of spa water with the use of a floating tablet feeder or automatic brominator installed on the spa equipment 3. Adjust tablet feeder or brominator to obtain an active bromine residual of at least 2ppm 4. Maintain spa by adding 3 tablets per 300 gallons (380L) every 5-7 days or as needed to maintain an active bromine residual of 2ppm at all times 5. Spa water has a tendency to foam or cloud; this is directly proportional to the amount of spa use Cloudiness is due to the accumulation of body fats, oils and contaminants too small for the filtration equipment to remove, and is linked to rapid escalation of total dissolved solids in the water. To great extent, defoamers, clarifiers, as well as shock treatments, demineralizers, or sequestering agents can be used to clear the water. When water clarification cannot be achieved, draining, cleaning and refilling the spa is recommended.