The Planted Tank Forum - View Single Post - Raising Phosphate Level
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Old 12-30-2012, 10:39 PM   #9
smiller
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Quote:
Originally Posted by plantbrain View Post

Run a test against the known standard for the test kit if you wish, see the sticky at the start of this subform for more info.
I calibrated my test kit and found it to be off. Based on that my last test showed the reading to be very close to 5ppm.
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