NetSpa spa water appears cloudy or milky even after running filtration.

Safety first: Avoid using the spa until visibility improves.

• Clean or upgrade filter: Thoroughly rinse the NetSpa filter cartridge or replace it. Consider using a fine-mesh NetSpa-compatible filter for heavy use.
• Run continuous filtration: Temporarily run the pump for several hours continuously to clear the water.
• Use clarifier: Add a spa water clarifier per instructions to help small particles clump for easier filtration.
• Balance water: Adjust pH and alkalinity to recommended ranges and manage calcium hardness.

If cloudiness persists, drain and refill the spa, then maintain a strict filtration and chemical routine.