Macronutrients
Nitrogen (N): 10-20ppm nitrate ideal.
Phosphate (P): 0.5-2ppm.
Potassium (K): 10-30ppm.
Micronutrients
Iron (Fe): 0.05-0.1ppm — critical for red plants.
Manganese, zinc, copper, boron — trace amounts.
Liquid Ferts
Seachem Flourish series: comprehensive options.
Daily or weekly dosing per product label.
Sold separately by macro vs micro.
Root Tabs
Push into substrate near root-feeders (Amazon swords, vallisneria).
Replace every 3-4 months.
Slow-release nutrients direct to roots.
Estimative Index (EI) Method
Dose generously. Excess removed via 50% weekly water change.
Plants get all the nutrients they need without limits.
Used by serious planted tank keepers.