Marine buffer will safely raise marine ph to 83 it will not raise ph above 83 even if inadvertently overdosedr marine buffer is a blended product and is not just sodium bicarbonate or sodium carbonate commonly sold as a substitute such products can raise ph to dangerous levels if not used properlyr marine buffer contains sodium magnesium calcium strontium and potassium salts of carbonate bicarbonate chloride sulfate and borater use seachems multitest marine ph amp alkalinity t