Foaming Water


Several factors can contribute to foaming in pools:

  • Soft water; low calcium hardness levels.

  • High TDS levels.

  • Lotions, oils and animal fats in the water.

  • Poor water balance.

  • Low grade algaecides. 10% polymers.

  • Tile cleaning phosphates.

  • Use of aeration (air jets) in biguanide treated pools.

  • Practical jokers with a box of soap!

Correcting the above conditions can reduce or eliminate foaming. Anti-foaming agents are available.


Chitin products like Sea-Klear can prevent or eliminate foaming from occurring. The Natural Chemistry line of enzyme products are also very effective anti-foam agents. Sometimes balancing the water and "shocking" the pool can remove the foaming.