SpaPure Alkalinity Increaser for Spas and Hot Tubs 16oz — Stabilizes pH, Protects Equipment

SpaPure Alkalinity Increaser 16oz is a concentrated formula designed to raise and stabilize total alkalinity in spas and hot tubs, helping protect equipment and improve sanitizer performance.

Keeping alkalinity in the recommended range stops rapid pH swings that can lead to corrosion, scale formation, cloudy water, and reduced sanitizer efficiency. SpaPure’s 16oz bottle delivers a measured, easy-to-use dose for routine maintenance or after shock treatments. The product is intended for regular testing-and-adjustment cycles using a test kit, not as a one-time fix for severely imbalanced water.

How does this product correct low alkalinity?

SpaPure alkalinity increaser contains buffering agents that raise total alkalinity safely when added according to label directions. It works by neutralizing acids in the water and creating a reserve that resists changes in pH, so the water remains more stable between tests.

• Add measured amounts based on test results and spa volume.
• Dissolve or broadcast per instructions to avoid localized concentration.
• Retest after circulation to confirm target alkalinity is reached.

Will this product stop pH bounce and protect my spa equipment?

Yes — by increasing total alkalinity into the recommended range, the product acts as a pH buffer and reduces sudden pH fluctuations that stress metal parts and liners. Stabilized water lowers the risk of corrosion and helps sanitizers work more predictably.

• Prevents rapid pH changes that can pit heaters and fittings.
• Helps prevent scale by keeping pH and alkalinity balanced together.
• Supports consistent sanitizer activity for clearer water.

How do I use SpaPure Alkalinity Increaser safely and effectively?

Test total alkalinity first and follow dosing guidance for your spa’s gallon capacity. Add the product in small increments, run the pump to mix thoroughly, and retest after at least 30 minutes to an hour before making more adjustments.

• Wear gloves and avoid inhaling powder; keep away from eyes.
• Add with pump running for even dispersion and rapid results.
• Wait and retest; do not overcorrect — raise alkalinity gradually.

How often should I check alkalinity when using this product?

Check total alkalinity at least weekly under normal use, and more often after heavy bather load, rain, or chemical treatments. Regular monitoring ensures you maintain the recommended range and prevents problems before they start.

• Test weekly during bathing season; test after shocks and storms.
• Adjust only when tests show levels outside the target range.
• Keep a maintenance log to track adjustments and results.

Who is this for: SpaPure Alkalinity Increaser 16oz is made for hot tub and spa owners who perform routine water testing and maintenance. It’s suitable for homeowners, property managers, and light commercial operators who want a compact, easy-to-store product to correct low alkalinity and support stable, comfortable water. Not intended as a substitute for regular testing or professional water treatment when severe imbalance exists.