Spa water is foamy when jets are on.

Safety first: Foamy water is usually not dangerous but indicates poor water quality.

• Step 1 – Test water balance: Check sanitizer, pH, and calcium hardness. Adjust to recommended ranges; low calcium can increase foaming.
• Step 2 – Use foam reducer (temporary): Add a spa-approved defoamer to quickly reduce foam, but understand this is a temporary cosmetic fix.
• Step 3 – Remove contaminants: Encourage users to shower before soaking and avoid using lotions or oils. Rinse swimsuits thoroughly without detergent.
• Step 4 – Clean filter: Rinse or replace the Nordic filter cartridge to remove trapped organics.
• Step 5 – Partial or full drain: If foam persists, drain 50–100% of the water, clean the shell, and refill with fresh water.