Natural Chemistry Spa pH Increaser — 2.49 lb Single Pack, Sodium Carbonate Formula for Gradual pH Correction

Natural Chemistry Spa pH Increaser is a sodium carbonate formula that raises spa and hot tub pH into the recommended 7.2–7.6 range for balanced, comfortable water.

Keeping hot tub water within the proper pH window protects equipment, extends the life of finishes and makes soaking more enjoyable. This 2.49 lb single-pack container of Natural Chemistry Spa pH Increaser is designed to steadily correct low pH using all‑natural sodium carbonate, providing a predictable way to bring acidic spa water up to the optical range without harsh additives.

How does this product safely raise pH in my hot tub?

The formulation uses sodium carbonate (soda ash), a commonly used alkalinity booster, to neutralize excess acidity and increase pH gradually. When added according to the label and with the pump running, it dissolves and disperses so the change is even and measurable.

• Active ingredient: sodium carbonate (all‑natural source).
• Designed for gradual, controllable pH increases.
• Add with circulation on and retest after 30 minutes.
• Non‑corrosive when used as directed to protect fittings and heaters.

How do I determine how much pH increaser to add?

Start by testing the spa water with a reliable pH test strip or kit, then compare the result to the dosing chart printed on the bottle. Add the manufacturer’s recommended amount for your spa volume while the pump circulates, wait at least 30 minutes and retest; repeat only if needed.

• Test first, add product with circulation running.
• Follow the bottle’s dosing chart for your spa size and current pH.
• Retest after 30 minutes; adjust incrementally to avoid overshooting.
• Do not add chemicals while people are in the spa.

What water problems does correcting low pH solve?

Bringing pH up into the 7.2–7.6 range reduces corrosion risk to metal components and helps sanitizers work effectively. Proper pH also improves bather comfort by lowering the chance of skin and eye irritation and keeps surfaces from etching or developing scale inconsistently.

• Protects heaters, pumps, and metal fittings from acidic corrosion.
• Helps maintain sanitizer efficiency for clearer water.
• Reduces irritation for bathers and preserves surface finishes.
• Contributes to overall balanced water chemistry when paired with alkalinity control.

Who is this for: Natural Chemistry Spa pH Increaser is aimed at hot tub and spa owners, service professionals, and rental property managers who need a reliable, easy-to-use product to correct low pH. If you want a straightforward sodium carbonate-based solution that integrates with routine testing and circulation practices, this 2.49 lb single pack is a practical choice for maintaining balanced, comfortable spa water.