The GreenPlanet Dual Fuel is GreenPlanet's two-part base nutrient, and the simplest feed in the range. Part 1 and Part 2 are used in equal amounts from the first week of veg to the last week of flower — no changing ratios, no stage-specific bottles. It's easy enough for a first grow and complete enough for a professional room.
One ratio, start to finish
Most bases change their recipe between veg and flower. Dual Fuel doesn't. The ratio stays at 1:1 throughout; only the strength changes as the plant grows. That takes the most common source of mixing errors out of the picture.
What's in each part
Part 1 carries the nitrogen and calcium: 5% nitrogen (mostly nitrate), 5% calcium and 1% potash, with chelated iron, manganese, zinc and copper plus boron, cobalt and molybdenum. Part 2 carries phosphorus, potassium, magnesium and sulfur: 3% phosphate, 6% potash, 1.5% magnesium and 2.5% sulfur. Kept in separate bottles, the calcium and sulfates can't react before they reach the water.
Full specifications
| Manufacturer | GreenPlanet Nutrients (British Columbia, Canada) — bottled in Australia under licence by WHG, Melbourne |
| Type | Two-part liquid base nutrient |
| Part 1 analysis | 5.0% N (0.15% ammoniacal, 4.85% nitrate) · 1.0% K₂O · 5.0% Ca · 0.02% B · 0.0005% Co · 0.007% Cu · 0.11% Fe · 0.04% Mn · 0.0005% Mo · 0.01% Zn (chelated micros) |
| Part 1 derived from | Calcium nitrate, potassium nitrate, iron EDTA, manganese EDTA, boric acid, zinc EDTA, copper EDTA, cobalt nitrate, ammonium molybdate |
| Part 2 analysis | 3.0% P₂O₅ · 6.0% K₂O · 1.5% Mg · 2.5% S |
| Part 2 derived from | Potassium sulfate, monopotassium phosphate, magnesium sulfate |
| Mixing | Equal parts 1 and 2, added separately to water |
| Dose rate | Per the Dual Fuel feeding program (PDF) |
| Sizes (sold as a set) | 2 × 1 L · 2 × 5 L · 2 × 20 L |
| Suitable for | Soil, coco and hydroponic systems |
FAQ
Do I get both bottles?
Yes. Each order is a set: one Part 1 and one Part 2, both in the size you choose.
Do I need a separate grow and bloom nutrient?
No. Dual Fuel is used through the whole cycle. Add flowering additives such as Massive or PK Spike in bloom if you want to.
Can I mix Part 1 and Part 2 together first?
No. Add each part to water separately and stir in between. Combined at full strength they react.
Do I need Pro Cal as well?
Part 1 already supplies calcium. On RO or soft water, or in coco, Pro Cal is a common addition.
Can I mix it with another brand?
We don't recommend it. GreenPlanet's feed programs are built around its own bases and additives, so results are most predictable when you stay within the range.