BioGuard Balance Pak 300 - 7 lb

Calcium Hardness Increaser for Protecting Pool Equipment and Surfaces

BioGuard Balance Pak 300 is a calcium hardness increaser designed to raise low calcium hardness levels in swimming pool water. This 7 lb size is a practical option for correcting hardness levels and helping protect pool equipment, plaster, liners, and surfaces from damage caused by water that is too soft.

When calcium hardness is too low, pool water can become aggressive and may contribute to corrosion, plaster etching, liner wrinkling, staining, and surface deterioration. BioGuard Balance Pak 300 helps restore calcium hardness to a healthier range, supporting better water balance and longer-lasting pool surfaces.

Its quick-dissolving formula is designed for direct pool application, helping make calcium hardness adjustment easier as part of routine pool maintenance.

Key Benefits

• Raises calcium hardness: Helps correct low calcium hardness in swimming pool water.

• Quick-dissolving formula: Dissolves faster with less cloudiness than similar products.

• Helps prevent corrosion: Supports protection of pool equipment and surfaces.

• Protects plaster and liners: Helps prevent plaster etching and vinyl liner wrinkling caused by low calcium hardness.

• Improves water balance: Helps maintain the right mineral balance for better chemical performance.

• Direct pool application: Scatter directly over the water surface as directed.

• Convenient 7 lb size: Useful for routine calcium hardness correction and seasonal balancing.

Product Details

Compatibility and Requirements

BioGuard Balance Pak 300 is designed for swimming pool water balancing when calcium hardness is low. It is especially important for plaster, concrete, and other pool surfaces that can be damaged by overly soft water, but proper calcium hardness also helps protect equipment and liners.

Before applying, test calcium hardness with a reliable test kit or professional water analysis. Add only the amount needed based on current test results, pool volume, and label directions. Do not pre-dissolve this product because heat can be generated when it contacts water.

How to Use

Test Calcium Hardness

Test pool water before treatment. Calcium hardness should generally be maintained in the recommended range, and product should be added only when testing shows calcium hardness is too low.

Apply Directly to Pool Water

Scatter the required dose directly over the pool water surface. Do not pre-dissolve. Use a surface-compatible pool brush to move away any undissolved granules from pool surfaces.

Standard Dose

Use 1 lb per 10,000 gallons to raise calcium hardness by approximately 10 ppm. For a 40 ppm increase, use 4 lb per 10,000 gallons.

Retest Before Adding More

Allow the product to circulate and retest calcium hardness before making additional adjustments. Avoid overcorrection, as high calcium hardness can contribute to scaling.

Frequently Asked Questions

What does BioGuard Balance Pak 300 do?

BioGuard Balance Pak 300 raises calcium hardness in swimming pool water. Proper calcium hardness helps protect pool equipment, plaster, liners, and surfaces.

Why is low calcium hardness a problem?

Low calcium hardness can make water aggressive, which may contribute to corrosion, plaster etching, staining, surface distortion, and liner wrinkling.

How much Balance Pak 300 should I use?

A common dosage is 1 lb per 10,000 gallons to raise calcium hardness by about 10 ppm. Always dose based on current test results and label directions.

Should I pre-dissolve Balance Pak 300?

No. Do not pre-dissolve BioGuard Balance Pak 300. Add it directly to pool water as directed.

What is the active ingredient?

BioGuard Balance Pak 300 is listed as 97% calcium chloride.