When your customers’ spa needs a line flush, hyperchlorination, or an EPA‑registered treatment, it doesn’t mean it’s been neglected — it means it’s doing what warm water naturally does. Hot tubs are perfect environments for biofilm: A slimy buildup that forms inside pipes, jets, and equipment, where you can’t see it. Once biofilm forms, normal chlorine levels often cannot fully penetrate it, allowing bacteria to survive and slowly release back into the water.

What Is Biofilm?

Biofilm is a sticky layer made of body oils, soap residue, and microorganisms that attaches to plumbing surfaces. Think of it like plaque on teeth — brushing the surface helps, but sometimes you need a deep cleaning.

Biofilm can:

• Reduce sanitizer effectiveness.

• Cause cloudy or smelly water.

• Lead to recurring problems even when chemistry tests “look good.”

Why a Line Flush Is Recommended

A line flush circulates a special cleaner through the plumbing to loosen and remove buildup inside pipes and jets.

Experts recommend a line flush when:

• Water problems keep coming back.

• The tub has been sitting unused.

• Filters show slimy residue.

• Jets release debris when turned on. This process is done before draining, so loosened material can be flushed out completely.

What Is Hyperchlorination?

Hyperchlorination is a short‑term, controlled increase in chlorine levels to kill bacteria that normal sanitizer levels may miss.

It is used:

• After heavy use.

• After a suspected contamination.

• When bacteria may be protected inside biofilm.

• Once complete, chlorine levels are safely returned to normal before the spa is used again.

• Use EPA‑Registered Products for Biofilm Remediation

• Many products claim to “remove biofilm,” but only EPA‑registered products have been tested and approved for their claims in U.S. spas and hot tubs.

Using EPA‑registered products ensures:

• The treatment is proven to work.

• Directions are legally approved.

• The process meets health‑safety standards.

• Experts recommend products appropriate for your customers’ spa and used exactly as directed.

What This Means for Your Customers

This deeper cleaning:

• Improves water clarity and comfort.

• Helps prevent recurring problems.

• Protects bathers’ health.

• Extends the life of your equipment.

It’s not about adding more chemicals — it’s about removing what chemicals can’t reach on their own. If you have questions about the process or timing, we’re happy to explain every step.

Our goal is simple: Clean water you can trust.