SpaGuard® Total Alkalinity Increaser 2 lb
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Key Features & Benefits
Prevents pH Bounce
Maintaining proper total alkalinity is essential for stable water chemistry. Without it, pH levels can fluctuate rapidly, making balance difficult and frustrating. This formula creates a protective buffering system that stabilizes pH and keeps your spa water consistently balanced.
Protects Equipment & Surfaces
Engineered for seamless compatibility with original mounting points for secure placement. Low alkalinity can cause corrosive water that damages heaters, pumps, plumbing, and acrylic surfaces. By restoring proper levels, you safeguard critical components and extend the lifespan of your hot tub investment.
Improves Sanitizer Efficiency
Balanced alkalinity allows chlorine or bromine sanitizers to perform at peak effectiveness. When your water chemistry is stable, you use fewer chemicals overall while maintaining cleaner, safer water.
Professional-Grade Performance
Formulated to deliver consistent, reliable results, this alkalinity increaser is trusted by spa care professionals for dependable water balance and long-term system protection.
Fast-Acting & Reliable Results
Dissolves quickly and begins stabilizing water chemistry within hours. Rapid correction minimizes downtime and helps restore ideal soaking conditions faster.
Simple, Hassle-Free Application
Just test your water, calculate the proper dosage, and add directly to your spa with circulation running. The straightforward process makes routine maintenance easy for both new and experienced spa owners.
Product Overview
SpaGuard® Total Alkalinity Increaser is a granular spa water balancer formulated with 100% sodium bicarbonate to raise total alkalinity. Total alkalinity acts as a buffer for pH, keeping it stable between water tests; when alkalinity is too low, pH tends to swing wildly with every chemical addition, a problem commonly called "pH bounce."
One tablespoon per 100 gallons raises total alkalinity by approximately 25 ppm, which lets you fine-tune your way into the recommended 80–120 ppm range for most spas. Because it works purely on alkalinity and pH balance rather than sanitizer chemistry, it's compatible with chlorine, bromine, ozone, and biguanide/mineral systems.
Stable alkalinity makes every other part of your water-care routine more predictable — sanitizer levels hold steadier, pH adjustments last longer, and your spa surfaces and equipment are better protected from the corrosion or scaling that comes with erratic water chemistry. This 2 lb bottle is a straightforward way to correct low alkalinity readings as part of routine testing.
Frequently Asked Questions
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Test your spa water weekly. Add SpaGuard Total Alkalinity Increaser only when levels fall below 80 ppm. Most spa owners need to adjust alkalinity every 2-4 weeks, depending on usage, water source, and chemical additions.
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Alkalinity increaser (sodium bicarbonate) raises total alkalinity, which buffers pH and prevents fluctuations. pH increaser (sodium carbonate/soda ash) raises pH directly but has minimal effect on alkalinity. Always adjust alkalinity first, then pH.
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While both contain sodium bicarbonate, SpaGuard is specifically formulated for spa use with precise granulation for faster dissolving and more accurate dosing. Baking soda can work in a pinch, but professional products deliver more consistent results.
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To raise alkalinity by 10 ppm in a 400-gallon spa, add approximately 1.5 tablespoons (0.5 oz). For a 25 ppm increase, use about 4 tablespoons. Always test before and after adjusting.
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Yes, alkalinity above 150 ppm can cause cloudy water, scale formation, and reduced sanitizer efficiency. If alkalinity is too high, use a pH decreaser to gradually lower it while monitoring pH levels.
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Yes, this product works with chlorine, bromine, salt systems, and mineral sanitizers. It's a fundamental water balancer that supports all spa sanitation methods.
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