Low Calcium Hardness can cause the water to become corrosive resulting in deterioration of equipment, staining, etching (in plaster pools) and discoloration of vinyl liners. BioGuard Balance Pak 300 quickly raises the calcium hardness level to protect your pool and equipment.
Raises Calcium Hardness Level
100% Calcium Chloride
Palletized formulation allows for faster dissolving, and less likely to cloud the water
Helps prevent etching and staining
Increases comfort level for swimmers
Apply over surface area with pump running
Do not pre-dissolve. Heat is generated when the product contacts water
Add 1 lb. per 10,000 gallons top increase calcium hardness 10 ppm
Use pool brush to brush any un-dissolved granules off pool surfaces
BioGuard Item Number:
52220BIO Hydropool.com Item Number:
BioGuard Item 52220 Documentation and Manuals
BioGuard Item 52220 Suggested Applications
All Concrete, Colored Plaster and Painted Pools
All Inground Vinyl Liner Swimming Pools
All Aboveground Swimming Pools
Orders Under $50
Orders Over $50
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.
Shipments must be inspected by customer prior to signing delivery receipt.
Orders containing small and light-weight items may ship via FedEx SmartPost or USPS.
You may return an item sold to you by Hydropool.com 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% - 25% re-stock fee may be applied should the order be returned to Hydropool.com by the carrier.
Any claims to missing parts, items or damaged goods for any orders must be made within 15 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 an item to Hydropool.com, please call 800-4MY-POOL to get a 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:
Products that may incur a re-stock fee of 15% - 25%:
Pool Cleaners *
Pool Heaters *
Pool Pumps *
Pool Filters *
Pool Lights & Fixtures *
Pool Ladders & Rails *
Pool Slides *
Pool Chlorinators *
Custom Manufactured Safety Covers
Pool & Spa Electronics or Controls *
In-Stock Safety Covers
Pool Covers that are Ordered and for the Incorrect Pool Size
Spa Cover Lifters *
Umbrellas & Umbrella Stands, and Hammocks *
* 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 ground shipment must be reported within 3 business days. Freight shipments must be inspected for damages prior to customer signing delivery receipt. Please email any information regarding concealed damage to firstname.lastname@example.org. Please reference your order number in all order related email correspondence.
Customer is responsible for any/all return shipping charges. Some returns may be subject to a 15% - 25% restock fee that will be deducted from your refund.
Please call 800-4MY-POOL if you have questions regarding this return policy.
Thank you for shopping Hydropool.com!
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