Hi all,
I have been wondering on many occasion on the correct way of taking water sample during test. As we are aware there are so much water in our tank, but which part of the water column we need to take for water test?
I heard that taking water sample from high flow and surface area will have less NO3 but lower water column like near sandbed will have higher NO3. Is that true? Pls advise?
I have been wondering on many occasion on the correct way of taking water sample during test. As we are aware there are so much water in our tank, but which part of the water column we need to take for water test?
I heard that taking water sample from high flow and surface area will have less NO3 but lower water column like near sandbed will have higher NO3. Is that true? Pls advise?
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