10/30/2026
Suds along the tile line the morning after a pool party look worse than they are. Pool foam almost always comes from one of four things.
🐢 Busy weekend? Lotion, sunscreen and soap from swimsuits hold the bubbles together. Raise chlorine and run the filter.
🐢 Just added algaecide? Many algaecides foam, especially when overdosed. Stop adding and switch to a non-foaming kind next time.
🐢 Bubbles coming out of the return jets? That is air getting into the pump, not chemistry. Check the water level and the pump lid O-ring.
Test before you add anything. Send us a photo of where the foam collects and what you added last week, and we will tell you which one you have.