For proper fertilizer, you need Macro and Micro nutrients.
Macro: Nitrogen, Phosphate and Potassium. Plants need this in large quantity. E.g Seachem Nitrogen, Seachem Phosphorus and Seachem Potassium
Micro: Fe, Mg, B, Cu, Co etc. Plants need it but in smaller quatity. E.g Seachem Iron and Seachem trace
Some brand combine all N, P and K together.









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