Help interpreting a water sample for plant nutrition.

Asked June 9, 2014, 10:54 AM EDT

I am looking for information regarding optimal levels of nutrients for a water sample taken from my aquaponics system.

The following are the results:
PH 7.0

SOLUBLE SALTS
(MMHO) 2.10

PARTS PER MILLION OF:

NITRATE-N 95
PHOSPHORUS 0.2
POTASSIUM 81
CALCIUM 375
MAGNESIUM 57
SODIUM 125
CHLORIDE 247
ALKALINITY 10
IRON 1.26
*
PERCENT OF TOTAL SALTS:
NITRATE 6.5
POTASSIUM 5.5
CALCIUM 25.4
MAGNESIUM 3.9

AMMONIUM 0
SODIUM 8.5
CHLORIDE 16.7

I understand that different plants will have different requirements, but I'm looking for ranges like: low, optimum, high, excessive, etc.

Thank you,
Paul

p.s. Just to clarify - I'm asking about plant nutrition, not fish.

Michigan

1 Response

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