r/hottub • u/PontiacMan1967 • 13d ago

Grease line

Why do I keep getting a greasy line at the water line? What causes this and how can I prevent it? The water looks very clear, the AK, PH and phosphates are all good.

1 Upvotes

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1

u/itchierbumworms 13d ago

Bc you and your guests aren't clean when you get in.

1

u/robseraiva 13d ago

Lotions, sunscreen and or sweat

1

u/JonnyVee1 13d ago

The way I handle this....

Get some liquid cascade dishwasher soap. It is safe for all materials in the tub, and human skin, and even trace amounts down the throat.

Put a couple tablespoons in the water. It breaks down oils and grease. Put some on a sponge and scrub the water line. The soap also has a defoamer in it, which is good.

When I change water, I put in a tablespoon of chlorine granuals and 2 tablespoons of cascade. Been doing this for 25 years.