sen5241b
Reef enthusiast
"Oceanic Sea Salt has abnormally high levels of Aluminum, Manganese, Nickel and Zinc. It also has a Strontium deficiency, but is otherwise similar to the other salts. Some type of metal contamination seems a possibility."
http://www.advancedaquarist.com/2005/12/aafeature1
http://www.advancedaquarist.com/2005/12/aafeature1