Learn how to fix the sandpaper feel in your hot tub with these simple tips. Identify mineral imbalance, low pH levels, and hard water as possible causes and learn how to test and adjust water chemistry. Discover the importance of draining and cleaning your hot tub, regular maintenance and prevention techniques, and the benefits of using softened water systems. Refinish the hot tub shell if needed and establish a regular cleaning regimen. Seek professional assistance for expert advice and troubleshooting. Avoid common mistakes that can damage your hot tub’s surface.