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Balance Pak 300 is a granular formula that provides a safe and convenient way to increase the Calcium Hardness in your hot tub water. This will have the parallel effect of increasing the Total Hardness.
Calculate the total amount of Balance Pak 300 required using the table below. To prevent clouding apply by dissolving one third of the Balance Pak 300 crystals in clean, cold water in a clean container and pour slowly around the perimeter of your spa with the pumps running.
Caution: Heat can be generated when dissolving this product. Use clean cold water only.
| Size of your tub. | To Raise calcium hardness... | |||
| 10 mg/l | 20 mg/l | 50 mg/l | 100 mg/l | |
| 500 litres / 110 gals | 8g | 15g | 38g | 75g |
| 1000 litres / 220 gals | 15g | 30g | 75g | 150g |
| 1500 litres / 330 gals | 23g | 45g | 113g | 225g |