Ph Down Pouch 2.5lbs

GLB pH Down is a granular acid formulation designed replace muartic acid to safely lower the pH of pool water into the optimal range (typically 7.2–7.8). By adjusting pH downward, it helps prevent scale formation, reduces cloudiness, and ensures sanitizers (chlorine, bromine, etc.) work more effectively. The 2.5 lb pouch is ideal for routine pool maintenance or smaller pools needing pH adjustment.

Brand: GLB

Product Name: pH Down

Package Weight: 2.5 lb pouch

Active Ingredient: Sodium bisulfate (≈ 95%)

Other Ingredients: Inert components (≈ 5%)

Type: Acidic pH setter (dry granular form)

pH Effect: Strong acid, lowers pH and total alkalinity

Usage: Use with pump running, broadcast into deep end (avoid near equipment or skimmer)

Typical Dosage: 4 oz per 10,000 gallons for moderate pH correction

Time to Wait: 6–8 hours before retesting pH after application

Compatible Systems: Safe for use with chlorine, bromine, ozone, saltwater, and biguanide systems

Safety / Handling:
  • Causes serious eye damage — wear eye protection
  • Avoid inhalation and contact with skin
  • Use protective gear in handling

Storage: Keep in cool, dry, sealed container away from moisture

Solubility: Highly soluble in water

Bulk Density / Appearance: Off-white granular solid

Incompatibilities: Avoid mixing with bases, strong oxidizers, or moisture

SDS / Safety Classification: Eye damage hazard, corrosive to skin and eyes