Balanced Spa Water Starts Here
SpaCare Alkalinity & pH Increaser is formulated to raise total alkalinity and pH in spa and hot tub water, helping maintain a more stable and comfortable bathing environment.
Low total alkalinity can allow pH to fluctuate more easily, making spa water harder to manage. This easy-to-use formula helps restore balance, support water clarity, and improve overall spa water comfort as part of your regular maintenance routine.
Made from quality sodium bicarbonate, it dissolves cleanly in water and is ideal for use when testing shows total alkalinity or pH is below the recommended range.
Support Balanced, Comfortable Spa Water
Promotes Water Balance
Helps restore the buffering capacity of spa water for more stable day-to-day water balance.
Helps Raise pH
Supports correction when spa water is too acidic and outside the recommended range.
Improves Water Stability
Helps reduce sudden pH fluctuations between treatments and makes spa water easier to manage.
Enhances Bather Comfort
Balanced spa water helps create a more comfortable and enjoyable soaking environment.
Clean-Dissolving Formula
Made from quality sodium bicarbonate that dissolves cleanly for reliable spa maintenance.
Easy Daily Spa Care
Simple testing and dosing helps maintain balanced spa water between uses and as part of your regular care routine.
How It Works
Total alkalinity acts as a buffer in spa water, helping slow sudden changes in pH. When alkalinity is too low, pH can become unstable and more difficult to control.
SpaCare Alkalinity & pH Increaser adds sodium bicarbonate to the water, increasing total alkalinity and helping bring pH back toward the recommended spa range. This supports more consistent water balance and makes ongoing maintenance easier.
How to Use
- Test the spa water before treatment.
- Determine the amount required based on your spa volume and current reading.
- Dissolve the measured product in a bucket of water.
- Pour slowly into the spa with the pump and filter operating.
- Run filtration for at least 1 hour after dosing.
- Allow 3–4 hours before re-testing.
Dosage & Coverage
- Total Alkalinity: Add 18g per 1,000 litres to raise total alkalinity by 10ppm.
- Recommended Total Alkalinity Range: 125ppm – 150ppm
- Recommended pH Range: 7.2 – 7.6
Important Usage & Compatibility Information
- Always test the water before adding product.
- Maintain total alkalinity at 125ppm–150ppm.
- Maintain pH at 7.2–7.6.
- Always adjust total alkalinity before adjusting pH.
- Dissolve in a bucket of water before adding to the spa.
- Do not overdose.
If pH has been 6.8 or lower for some time and corrosion of metal fixtures is already visible, seek professional advice before treatment, as metal staining may occur.
Specialised Care for Spas and Hot Tubs
SpaCare by Lo-Chlor is created for the unique needs of spas and hot tubs, where warm water and frequent use demand a more specialised approach to water care.
From water balance and sanitising support to surface care and system cleaning, the SpaCare range works together to help keep your spa clear, comfortable, and inviting.
It is a trusted care system that makes ongoing maintenance feel simpler, so you can spend less time managing your water and more time enjoying it.
Frequently Asked Questions
Why does my pH keep changing so quickly?
Rapid pH movement often happens when total alkalinity is too low. Without enough buffering capacity, spa water becomes less stable and pH can rise or fall more easily between treatments.
How long should I wait before re-testing the water?
After dosing, allow the spa water to circulate for at least 1 hour, then wait around 3–4 hours before re-testing. This gives the product time to dissolve fully and distribute evenly through the water.
What if my pH is still low after adding the product?
Re-test both total alkalinity and pH after circulation. If alkalinity was very low to begin with, more than one adjustment may be needed. Always make gradual corrections rather than adding too much at once.
Why is my spa water still uncomfortable even after balancing it?
While pH and alkalinity are important, overall comfort can also be affected by sanitiser level, calcium hardness, bather load, and general water condition. If water still feels harsh or unstable, a full water test is recommended.
When should I seek professional advice?
If your spa water has remained at very low pH for some time and corrosion of metal fixtures is already visible, professional advice is recommended before treatment. In some cases, correcting the water balance may reveal existing metal-related issues such as staining.
