Must be. I just thought that was odd -- since NO3 and PO4 are pretty easy to come by, I would have guessed that the regulations would stipulate those need be tested too.
Is it a hard process to get the more comprehensive report? I've never tried it.
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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