Product Description 

Spa Fresh Ultra pH & Alkalinity Up is a premium balancing agent designed to increase both pH and total alkalinity in spa and hot tub water. Maintaining correct water balance is essential for protecting spa equipment, ensuring sanitizer efficiency, and providing a comfortable bathing experience.

Low pH or alkalinity can cause corrosion, etching, heater damage, eye irritation, and unstable water chemistry. This product provides a fast‑dissolving, easy‑to‑dose formula ideal for all portable spas, swim spas, and chlorine‑free Spa Fresh Ultra systems.

Key Features

• Raises pH and total alkalinity quickly and safely
• Prevents corrosion of heaters, pumps, jets, and metal components
• Improves sanitiser performance and water stability
• Reduces eye and skin irritation caused by low pH
• Fast‑dissolving granules for easy application
• Compatible with all spa types, including chlorine‑free Spa Fresh Ultra systems
• Essential for weekly water balancing

Technical Specifications

(Standard for pH/Alkalinity increasers — adjust if needed)

• Product type: pH & alkalinity increaser
• Brand: Spa Fresh Ultra
• Form: Fast‑dissolving granules
• Application: As required to maintain pH 7.2–7.8 and alkalinity 80–120 ppm
• Suitable for: All portable spas, swim spas, acrylic spa shells
• System compatibility: Chlorine, bromine, ozone, UV, Spa Fresh Ultra

Usage 

• Test water before dosing.
• Add the recommended amount directly to the spa with pumps running.
• Re-test after 30–60 minutes.
• Adjust gradually to avoid over‑correction.