How much borax do i put in a 30000 gal pool?

You can add 5-10 pounds of borax for every 10,000 gallons of water in your pool. For a 30,000 gallon pool, you would need to add 15-30 pounds of borax to adjust the pH and alkalinity levels. Be sure to test the water after adding borax to ensure the levels are within the recommended range.