Flourish Excel promotes the ferrous state of Iron and is a source of bio available organic carbon.
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Nitrogen is one of the main three macro nutrients (nitrogen, phosphorus, potassium: NPK) required by plants and can often become the limiting factor to growth in a flourishing system.
Flourish Nitrogen is a concentrated (15,000 mg/L) blend of nitrogen sources.
It provides nitrogen in both the nitrate form and the plant–preferred ammonium form.
However, no free ammonia is released because the ammonium in Flourish Nitrogen is complexed and unavailable until utilized by the plants. Ammonium becomes available after conversion of urea (carbamide).
Flourish Nitrogen also provides nitrate for those plants that can readily utilize nitrate as well.
For maximum benefit, use with Flourish Phosphorus and Flourish Potassium.
Flourish Nitrogen is safe for invertebrates such as shrimp.