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GSA and GDA: What's the difference?
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11-22-2008, 07:19 PM
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Nevermore
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Re: GSA and GDA: What's the difference?
My nitrate is 13 ppm. I'm using the LaMotte test kits for both nitrate and phosphate testing and their kits are usually supposed to be fairly reliable. Maybe I should test the test kit just to be sure.
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