Some thing also to check, is that they have a Hanna checker out, that reads PPB, It's an ULR phosphate reader. I have a reading of .0004ppb in my tank.
I can't remember the details exactly but I remember reading a thread were Randy Holmes Farley explains that the ULR phosphorus checker is not much more accurate than the phosphate checker.
12-21-2011, 12:55 AM
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