The Planted Tank Forum - View Single Post - question on ferts
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Old 10-16-2012, 06:51 PM   #2
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Synthetic urea is created from ammonia and co2. When nitrogen is mixed with urea it becomes water soluble. Urea is found in most plant and lawn fertilizers. Potassium nitrate is the source of mineral nitrogen and the urea is what lets the plants absorb it. Potassium (K) is a different element altogether.
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