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Enter the information below, and Humboldts Secret Nutrient Calculator will tell you how much of each component you need to mix into your reservoir.

Medium Feeding Program
Growth Phase Bloom Phase
Week 1Week 2Week 3Week 4Week 1Week 2Week 3Week 4Week 5Week 6Week 7Week 8Week 9Total
Base A 5–9 ml 5–9 ml 5–9 ml 5–9 ml 14–16 ml 14–16 ml 16–18 ml 18–20 ml 18–20 ml 18–20 ml 16–18 ml 16–18 ml 166.0–190.0 ml
Base B 6–8 ml 8–10 ml 10–12 ml 12–14 ml 14–16 ml 14–16 ml 16–18 ml 18–20 ml 18–20 ml 18–20 ml 16–18 ml 16–18 ml 166.0–190.0 ml
Golden Tree 0.5 ml 0.5 ml 0.5 ml 0.5 ml 0.5 ml 0.5 ml 0.5 ml 0.5 ml 0.25 ml 0.25 ml 0.25 ml 0.25 ml Flush5.0 ml
Flower Stacker 4 ml 4 ml 4 ml 4 ml 4 ml 4 ml 24.0 ml
Plant Enzymes 8 ml 8 ml 8 ml 24.0 ml
Sweet & Sticky 8 ml 10 ml 10 ml 28.0 ml
CalMag & Iron 0 ml 0 ml 0 ml 0.0 ml
EC 1.0–1.2 ml 1.2–1.4 ml 1.4–1.6 ml 1.6–1.8 ml 1.8–2.0 ml 1.8–2.0 ml 1.9–2.1 ml 2.1–2.3 ml 2.1–2.3 ml 2.3–2.5 ml 2.0–2.2 ml 2.0–2.2 ml 17.0–20.0 ml