SKU: 2306B
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Robelle pH Lower - 6 Lbs

$47.99 $29.98
  • Lowers pH levels
  • Helps protect pool equipment
  • Prevents scaling
  • Prevents itchy skin & eye irritation
  • Effective and easy to use
Robelle pH Lower prevents eye and skin irritation and scaling that will damage pool surfaces and pool equipment. This will prevent scaling, calcium deposits, and cloudy water conditions. This product lowers the pH and the total alkalinity of swimming pool water. The ideal pH range is 7.4 - 7.6. A pH in this range will allow your sanitizer to work effectively, reduce equipment corrosion, reduce eye irritation and reduce skin dryness.

Directions for lowering pH: 1. Measure the pH of the pool water with a reliable test kit or test strip. 2. Use the table below to determine the correct amount of this product to add to your pool.
How to add to pool: 1. Ensure the circulation system is on and functioning. 2. Broadcast this product evenly over the surface of the pool. 3. Water may be retested and additional product added, if needed, after 4 hours. Do not add this product into skimmer, near underwater lights, near metal ladders or near metal fixtures; Do not add water to this product, always add this product into water; Do not add more than 32 ounces of this product per 10,000 gallons pool water at one time.
How to lower alkalinity: Always adjust total alkalinity first. Keep the total alkalinity between 80-120 parts per million (ppm). Test the total alkalinity with a reliable test kit or test strip. If the total alkalinity is high: Add 2 Ibs. of this product for each 10,000 gallons of pool water to lower alkalinity 10 ppm. Keep the circulation pump running. Add this product in one spot at the deepest part of the pool. Repeat procedure until desired total alkalinity is reached. Always wait at least 4 hours between treatments.
Dosage of This Product in Ounces for 2,500 Gallon Pool: pH 7.6 - 7.9 add 2 oz., pH 8.0 - 8.4 add 4 oz., pH Above 8.4 add 6 oz. Dosage of This Product in Ounces for 5,000 Gallon Pool: pH 7.6 - 7.9 add 4 oz., pH 8.0 - 8.4 add 8 oz., pH Above 8.4 add 12 oz. Dosage of This Product in Ounces for 10,000 Gallon Pool: pH 7.6 - 7.9 add 8 oz., pH 8.0 - 8.4 add 16 oz., pH Above 8.4 add 24 oz. Dosage of This Product in Ounces for 20,000 Gallon Pool: pH 7.6 - 7.9 add 16 oz., pH 8.0 - 8.4 add 32 oz., pH Above 8.4 add 48 oz.


Since 1973, Robelle Industries, Inc. has been supplying quality swimming pool chemicals, winter pool covers and accessories to regional and national chains, as well as to New England's pool specialty dealers. In fact, over the last four decades, northeast swimming pool owners have used more Robelle pool care products than any other brand. The Robelle mission is to bring its customers the best product for their swimming pool dollar. They are dedicated to seeking out new product formulations which meet the highest standards of pool chemical efficacy and product durability. Determined to safeguard its trusted Robelle name, they have painstakingly built a line of quality swimming pool chemicals that includes everything pool owners need to keep their swimming pools clear, clean and healthy. The Robelle brand means superior quality routine pool care products, cleaners, algaecides and other pool specialty products at a reasonable price.

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