Substances not recommended for use in whirlpool jacuzzi bathtubs include: 1. Foaming bath products 2. Essential oil products 3. Coarse-grained bath salts or scrubs 4. Highly concentrated chemical cleaners or disinfectants 5. Dye-based or highly colored bath products 6. Alcohol-based care products

Visual Identification: Visible Signs of Contamination · Black or yellow stains around the nozzle: This is usually due to the accumulation of scale, mold, or sebum. Abnormal oil or bubbles on the water surface: A milky white film or persistent foam on the water surface indicates the presence of grease or detergent residue.