Seachem Marine BufferSeachem Marine Buffer will safely raise the pH of saltwater to 8. 3, and will not raise the pH above 8. 3 even if overdosed. Marine Buffer is a blended product, and contains sodium, magnesium, calcium, strontium, and potassium salts to provide effective results. Safely raises and maintains saltwater pH to 8. 3 More stable than sodium bicarbonate or sodium bicarbonate substitutes Will not raise pH above 8. 3 even if inadvertently overdosed Seachem