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#1
02-18-2005, 01:51 PM
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Some carbon has a fair amount of phosphate in it. I'd take some of your carbon, put it in a small vial full of water and give it 24-48 Hrs to leach and then do a phosphate test on it. I'm using the 24-48 Hrs because it strikes me that it would take that long, it may leach out sooner I don't know.
Doug 
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