6: Water line tile dirty. Paint coming off of coping around hot tub. Contrasting band on underwater steps and bench fading off.
20: Total alkalinity and cyanuric acid level too high.
22: Free available chlorine too low. High level of combine chlorine in pool water. Highly recommend to super chlorinate hot tub water then drain water and start with fresh water.
Cyanuric acid level > 300 ppm. Total chlorine 2.5 ppm. Combined chlorine 2.0 ppm. Permit posted.