How often do you test?
19 members have voted
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1. How often do you test NO3?
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Once a week7
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Once every 2 weeks3
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Once a month1
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Only when something goes wrong4
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Never4
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2. How often do you test PO3?
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Once a week4
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Once every 2 weeks4
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Once a month3
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Only when something goes wrong3
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Never5
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3. How often do you test Ca and Alk?
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Once a week15
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Once every 2 weeks0
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Once a month0
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Only when something goes wrong1
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Never3
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4. How often do you test trace elements?
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Once a week1
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Once every 2 weeks0
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Once a month2
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Only when something goes wrong0
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Never16
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5. How often do you test Mg?
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Once a week9
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Once every 2 weeks1
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Once a month4
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Only when something goes wrong1
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Never4
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