, Par Inc. of Conn, Par Pool & Spa

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Pool Water Care BioGuard Chlorine & Bromine Chemicals BioGuard Soft Swim non-chlorine chemicals BioGuard Mineral Springs salt chlorine Pristine Blue non-chlorine, non-bromine easy care AquaFinesse Pool Water Care Jack's Magic Pool Care Solutions Natural Chemistry Solutions Nature2 ionizers Pool Trol Discount Chemicals Salt chlorine chemicals Automatic Chlorine feeders UV, ultra violet Pool water testing, kits, strips, reagents pH & water balance Algae solutions BioGuard Pool Water Solutions Pool Cleaning & Care Intex & soft sided pool care Swim Spa care BioGuard Easy Order page Pool care kits Winterizing Chemicals BioGuard, Pristin Blue, AquaFinesse, Soft Swim, Jacks Magic, Natural Chemistry, Pool Trol,

BioGuard® Water Balance, Conditioning & Accessory Products
®. Guarding more than your pool.

For POOL use only.  DO NOT use in spas or hot tubs.

BioGuard Balance Pak 300 Calcium Hardness Increaser

BioGuard® Balance Pak 300 Calcium Hardness Increaser safely & effectively increases the Calcium Hardness (CH) in your swimming pool. 

When CH is low, the corrosion of pool surfaces, especially newly plastered gunite pool walls will occur. 

In vinyl liners, low calcium hardness will contribute to a faster breakdown of the liner's plasticizer.  In short, the water becomes aggressive.

High Calcium Hardness leads to the pool water becoming scale forming which damages pool parts & surfaces.  High CH will causing scale build up in swimming pool heaters thereby dramatically increasing the cost to heat the pool. 

High calcium hardness will also lead to cloudy water, especially as the water becomes warmer (over 85° F).

Good water balance is essential - you can watch the Video here!

Excellent for use in all pools.  Swimmers may use the pool only 15 minutes after application! 

No Pre-mixing required!

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Read & follow all label instructions. When pool is not in use, broadcast proper dosage, up to 10 lbs. Per 10,000 gallons at a time, directly into the deep end of the pool with the pump running.  Do not add through skimmer. 

Click here to find out how much Balance Pak 300 to use

Allow water to re-circulate 2 to 3 hours, retest, repeat treatment to adjust Calcium Hardness up to 225 - 275 ppm (vinyl pools).

Use as needed. 
Pump must run 8--12 hours daily for best results. 

Sizes Available:

5 lb. $10.99
12 lb. $25.99


BizRate Customer Certified (GOLD) SiteNOTE:  Avoid physical contact with product.  Follow all safety information on label instructions.  Open ONLY in WELL VENTILATED AREAS.  Avoid breathing fumes.  Store in a cool, dry place.  Keep out of the reach of children.


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