Calcium hardness increaser
Add 4 pounds Balance Pak® 300 to raise calcium hardness by 40 ppm directly to pool water by scattering over the water surface. The addition of 10 pounds per 10,000 gallons of water will raise calcium hardness approximately 100 ppm.
Do not pre-dissolve this treatment as heat is generated when the product contacts water.
Use a surface compatible brush to brush any undissolved granules off pool surfaces.
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