Marine Buffer is the original and still unique buffer with a pH of 8.3, designed to adjust pH to 8.3 and maintain both pH and alkalinity (KH). It is formulated not to disrupt the natural ionic balance of marine water with prolonged use. Contains a natural balance of sodium, magnesium, calcium and potassium salts of carbonate, bicarbonate, and borate, formulated for enhanced and lasting buffer capacity at pH 8.3 without sacrificing calcium. It dissolves readily and does not obscure water clarity. Treats up to 1,000 gallons.