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Product Specifications

Manufacturer: BioGuard
BioGuard Item Number: 23317BIO Item Number: 23317
UPC/GTIN: 017541612289
Condition: New

Product Information

BioGuard Lo-N-Slo is formulated to slowly lower the pH to protect the equipment and the pool from scale build up. BioGuard Lo-N-Slo will help clear cloudy water due to a high pH and improve chlorine efficiency while keeping the water safe and looking good.

Product Benefits:

  • 93.2% Granular sodium bisulfate
  • Lowers pH
  • For use in all pool types
  • Convenient granular form
  • Easy to use (no mixing required)
  • Increases chlorine efficiency
  • Safer than Muriatic Acid

Dosage Directions:

  • Use a BioGuard Test Kit to determine pH
  • Apply prescribed amount based on test results
  • Balance Total Alkalinity to 125 to 150 ppm
  • If pH is above 7.6, apply Lo 'N Slo as determined by the acid demand chart in test kit
  • Apply by broadcasting product evenly across the pool with the pump running
  • Circulate for 2 hours and then retest pH
  • Never add more than 1 1/2 lbs. of Lo 'N Slo per 10,000 gallons at one time
  • Newly plastered pools may require frequent treatments for the first few weeks
  • Do not add near metal fittings nor allow pH to drop below 7.2
  • Do not allow un-dissolved lumps to remain on the pool bottom. Break up with brush.

BioGuard Item 23317 Documentation and Manuals

BioGuard Item 23317 Suggested Applications

  • All Concrete, Colored Plaster and Painted Pools
  • All Inground Vinyl Liner Swimming Pools
  • All Aboveground Swimming Pools

Shipping Rates

Orders Under $50 $5.00
Orders Over $50 FREE
3-Day Premium add $50.00
2-Day Premium add $65.00

Shipping Policies:

  • We do not ship to PO Boxes or APO / PPO Addresses
  • We only ship orders to the 48 contiguous United States
  • Chemicals, pool paint, and some oversized items, will only ship via ground service.
  • Items shipped via Freight Service, such as pool heaters, will only ship via ground service.
  • All orders shipping to Maryland will incur a 6% sales tax charge
  • Some items, including hazmat, may require a Direct Signature upon delivery.
  • Orders containing small and light-weight items may ship via FedEx SmartPost or USPS.

Order Returns

You may return an item sold to you by up to 30 days after purchase. The product must be in good condition, unused, in original packaging, and must have all parts, accessories and paperwork; returns without these requirements and/or guidelines will not be accepted.

If a delivery attempt is unsuccessful on order requiring a direct signature, a 15% restock fee may be applied should the order be returned to by the carrier.

Any claims to missing parts, items or damaged goods for any orders must be made within 30 days of delivery date. We are not able to credit your shipping and handling fees if the wrong product was ordered due to customer error. However, if you received the wrong products due to an error on our behalf, we will pay for the return services fees and you will receive a full refund or exchange.

To return product to, please call 800-4MY-POOL to get an Return Merchandise Authorization number (RMA) and return instructions. Any items returned without an RMA number will be refused. We will process your refund upon receipt of the returned product.

Products that cannot be returned:

  • Pool Chemicals
  • Pool Cleaners *
  • Special Orders
  • Pool Liners
  • Pool Paint
  • Deck Coatings & Paint
  • Pool Heaters *
  • Pool Pumps *
  • Pool Filters *
  • Pool Ladders *
  • Pool Chlorinators *
  • Custom Manufactured Safety Covers
  • Stock Covers that are Ordered and for the Incorrect Pool Size

* These products must not have been used, installed, or attempted to have been installed. All products must include original paperwork, parts & accessories, and everything accompanied with the product.

Concealed damage on any item must be reported within 3 business days. Please email any information regarding concealed damage to Please reference your order number in all order related email correspondence.

Customer is responsible for any/all return shipping charges. Some returns may have a 15% restock fee that will be deducted from your refund. Restock fees are generally applicable when the returned product is found to not be in re-sellable condition, has been installed or attempted to be installed, or does not include all original items, the return will be refused.

Please call 800-4MY-POOL if you have questions regarding this return policy.

Thank you for shopping!

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