alkalinity increaser

Baking Soda to Raise Alkalinity in a 6-Person Hard-Shell Hot Tub: Dose by Starting Level

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Low alkalinity in a 6-person hard-shell hot tub causes pH swings, cloudy water, and equipment corrosion. This guide gives exact baking soda doses by starting level, a comparison table, and a step-by-step process for getting your alkalinity into the 80-120 ppm target range safely.

Baking Soda to Raise Alkalinity in a 300-Gallon Inflatable Hot Tub: Exact Dose

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Low alkalinity in a 300-gallon inflatable hot tub causes pH swings, corrosion, and irritated skin. This post gives you the exact baking soda dose per 10 ppm of alkalinity, walks through a full worked example, and explains how to add it correctly so it actually works.