Keep your pool water balanced with HTH PLUS Alkalinity Increaser (25 lb). This specialty formula is engineered to raise total alkalinity, providing a stable buffering capacity that minimizes pH swings caused by weather, swimmer load, and sanitizer additions. With properly balanced alkalinity, your pool stays clearer, safer, and easier to maintenance routine.
Why alkalinity matters
Total alkalinity acts as the buffer for pH. When alkalinity is too low, pH can fluctuate wildly, leading to cloudy water, corrosion of metal components, and reduced sanitizer effectiveness. By elevating alkalinity to the correct range, you create a steadier environment where pH remains within ideal levels for comfort and equipment protection.
Key benefits
- Stabilizes pH by increasing total alkalinity, reducing annoying pH drift
- Helps chlorine and other sanitizers work more efficiently, delivering consistent sanitization
- Large 25 lb container—ideal for frequent maintenance and larger pools
- Simple integration into existing pool care routines with clear dosage guidance on the label
- Suitable for routine seasonal maintenance and after events that stress water balance (rain, heavy use, or chemical adjustments)
How to use
Begin with a water test to determine current alkalinity and pH. Follow the product label for dosing based on pool size and the measured alkalinity. With the pool circulating, evenly broadcast the product around the pool or near the return jets to promote even distribution. Allow the chemical to circulate, then re-test after 24 hours and adjust as needed. If your pH remains unstable, consider balancing accompanying parameters in your pool care routine.
Who this is for
- Pool owners seeking a reliable way to maintain stable pH and protect sanitizers
- New pools or pools experiencing frequent alkalinity drift due to weather or use
- Homes needing a long-lasting, bulk solution for regular balance maintenance
Why choose HTH PLUS
HTH PLUS is a trusted line in pool care, designed for predictable, practical results. The 25 lb bag provides a convenient, economical option for households managing larger pools or seasonal maintenance. When you want straightforward, dependable alkalinity adjustment that supports overall water balance, HTH PLUS Alkalinity Increaser is a solid choice.
