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Add 1 teaspoon by measure to 8 litres of water to raise carbonate hardness by approximately 6dkH (105ppm)
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Hanna Marine Alkalinity Checker®HC (dKH)- HI772 Iron Add 1 teaspoon by measureThe HI772 CheckerHC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure alkalinity in degrees of calcium hardness, commonly abbreviated as dKH. Critical to marine environments, alkalinity not only provides the carbonate ion required for calcium carbonate skeletal regeneration of coral reefs, but it also acts as a pH buffer against large changes in acidity. Designed as a more accurate alternative to chemical test kits,
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