Pool Mate Sodium Bicarbonate Alkalinity Increaser for Swimming Pools, 25 lb — Fast-Dissolving, Stabilizes pH

Pool Mate 25-Pounds Premium Alkalinity Increaser is a fast-dissolving sodium bicarbonate formula designed to raise and stabilize total alkalinity in swimming pools.

Keeping total alkalinity in the correct range is a key step to protect your pool surfaces, equipment and sanitizer performance. This product adds carbonate alkalinity to pool water, reducing pH drift and helping to prevent scale buildup, metal corrosion and surface etching. It dissolves readily when added while the pump runs and is simple to measure using standard pool test kits.

How much alkalinity will this product add to my pool?

The concentrate is sodium bicarbonate; dosage depends on pool volume. As a guideline, roughly 11 ounces of this product will raise total alkalinity by about 10 ppm in 5,000 gallons of water. Always confirm with a test kit and adjust gradually rather than making a single large addition.

• 11 oz raises TA ~10 ppm per 5,000 gallons
• Measure current alkalinity before dosing
• Add in stages and retest after full circulation

Where and how should I add the alkalinity increaser?

Add the powder directly to the pool with the pump and filter running to ensure rapid distribution and dissolution. Broadcast small amounts evenly around the deep end or pour pre-dissolved solution into the return jets. Follow the dosing table included with the product for precise volumes based on your pool size.

• Keep pump running during application for even mixing
• Broadcast around pool or use returns for quicker dispersion
• Wait at least 4 hours and retest before further additions

What benefits will I notice after correcting alkalinity?

Raising total alkalinity stabilizes pH, making sanitizer more consistent and lowering the risk of surface damage and plumbing corrosion. Balanced alkalinity reduces pH swings that can cause cloudy water or inefficient disinfectant action. Proper alkalinity also helps keep chemical maintenance more predictable week to week.

• Reduces pH “bounce” for steadier water chemistry
• Helps prevent scale, staining and plaster etching
• Improves sanitizer effectiveness and clarity

Are there recommended alkalinity ranges for different pool surfaces?

Yes — the ideal total alkalinity varies by pool construction. Fiberglass pools typically call for lower alkalinity than vinyl or plaster finishes. Use the following target ranges and adjust to the low end if your pool tends to carbonate or scale.

• Fiberglass: 70–100 ppm
• Marcite, painted, tile, exposed aggregate: 80–120 ppm
• Vinyl: 120–140 ppm

Who is this for: Pool Mate 25-Pounds Premium Alkalinity Increaser is intended for pool owners, service professionals and property managers who need a reliable way to raise and stabilize total alkalinity. It suits all common pool types — vinyl, fiberglass, plaster and tile — and is especially useful when pH fluctuates frequently or when test results show alkalinity below recommended ranges. Use alongside regular testing and your sanitizer routine for best results.