Where we mention MAV AquaDoc pH Down for Pools - Sodium Bisulfate pH Decreaser - 5 lb Pail

• Pool pH: What It Is, How to Test It, and How to Raise or Lower It

  Dry acid option · Best for: Small pools and indoor chemical storage

• Pool Total Alkalinity: What It Is, Ideal Range, and How to Raise or Lower It

  Small dry-acid container · Best for: A confirmed high-TA correction without liquid-acid fumes

• Muriatic Acid Safety: How to Use, Store, Dispose

  Best dry-acid alternative (sodium bisulfate, scoop-and-pour) · Best for: Anyone with kids, an enclosed pool shed, or a spa under a cover. Dry acid (sodium bisulfate) ships as a granular powder that you scoop from a pail — no fumes, no splashing, no concentrated liquid to spill. The trade-off is roughly 2x cost per dose and slower to dissolve.