Marquis Spas Excessive Surfactants / Contaminants in Water

Foam builds up on the water surface during jet operation.

Possible Causes

Body oils, soaps, and detergents from bathers; old water with high dissolved solids; use of non-spa-approved chemicals; low calcium hardness

Water maintenance:

Skim and defoam: Use a skimmer net to remove foam and add a spa-approved defoamer as a temporary measure.
Clean filters: Rinse filters thoroughly to remove trapped oils and soaps.
Partial drain: If foam persists, drain 25–50% of the water and refill with fresh water, balancing chemicals afterward.
Preventive steps: Encourage users to shower before use and avoid entering the spa with lotions or detergents on swimsuits.

Very Easy 1/5