How much vinegar do I put in a hot tub holding 250 gallons?

For a hot tub holding 250 gallons, you can add about 1 to 2 cups of vinegar to help with cleaning and balancing pH levels. It's best to start with 1 cup, allowing the water to circulate for a few hours before testing the pH again. If you need to adjust further, you can add more vinegar gradually. Always ensure to check the water chemistry after adding vinegar to maintain optimal water quality.