Newmarket, Ontario (Head Office)
1175 Stellar Drive, Unit #5
Newmarket, ON L3Y 7B8
- Mon10:00am–6:00pm
- Tue10:00am–6:00pm
- Wed10:00am–6:00pm
- Thu10:00am–6:00pm
- Fri10:00am–6:00pm
- Sat10:00am–4:00pm
- SunClosed
$0.00 CAD
Out of stock at your chosen pickup location? We'll automatically transfer inventory from another location so it's ready at your selected pickup location. (Ontario Only)
Couldn't load pickup availability
GreenPlanet Nutrients Hydro Fuel Grow A and B is a 2-part vegetative stage base nutrient and liquid base fertilizer for strong early growth and robust, healthy foliage. This liquid fertilizer base is built to support plant development during the vegetative stage with a clear, stage-specific focus.
As the grow component of the Hydro Fuel 4-part base nutrient system, Hydro Fuel Grow is made for growers who want more control during the vegetative stage. Splitting the grow component into A and B formulas helps deliver a diverse range of macro, micro, and secondary nutrients while keeping the role of each part clear inside a complete base nutrient system. The formula emphasizes high amounts of nitrogen alongside added phosphorus, potassium, and calcium, supporting steady vegetative momentum and healthy foliage growth as plants build structure and canopy.
The product’s profile is straightforward and easy to recognize in one line: Hydro Fuel Grow A and B is labeled 5-0-3 / 1-2-5. That paired NPK snapshot reinforces what this is: a 2-part base nutrient designed around vegetative stage priorities. Beyond the NPK, this liquid base nutrient brings in a broader nutrient spectrum that supports plant performance through early growth, including calcium and a range of micronutrients that help keep vegetative development balanced.
GreenPlanet highlights fully chelated elements as a key quality signal for this formula, aimed at a consistent and reliable nutrient profile. Micronutrient support includes chelated iron and chelated manganese, with chelated zinc also listed, along with boron, cobalt, and molybdenum. The B component also includes magnesium and sulfur as part of its nutrient makeup, rounding out the vegetative stage base nutrient profile with supporting elements that plants commonly rely on while building new growth.
Hydro Fuel Grow A and B fits a wide range of garden setups, including hydroponics, drain to waste, recirculating systems, and soil/soilless media. It’s a good fit for growers who want a stage-specific, 2-part base nutrient inside the Hydro Fuel 4-part base nutrient system, especially when the goal is reliable vegetative stage support with a diverse range of macro, micro, and secondary nutrients for robust, healthy foliage.
Step-by-step mixing and feeding instructions for Green Planet Nutrients Hydro Fuel Grow A - 23 Litre.
Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of Green Planet Nutrients Hydro Fuel Grow A - 23 Litre well before every use. Using the feeding schedule below, measure the recommended dose and add it directly to the water while stirring. Allow the solution to mix fully before adding any other fertilizers, additives, or supplements.
Always add nutrients to water — not the other way around. Mix thoroughly between products to ensure an even, stable nutrient solution.
Vegetative stage — Grow A
Flowering stage — Grow A
Warning – Important Safety Information
This product may cause mild skin irritation and eye irritation. Avoid unnecessary contact with skin, eyes, and clothing. Use only as directed.
General safety precautions
Read and follow all instructions on the product label and any accompanying documentation before use. Keep out of reach of children and pets. Do not ingest. Avoid breathing vapours, mist, or dust that may be generated during handling or use.
Wear appropriate personal protective equipment (PPE), such as protective gloves, long sleeves, long pants and closed-toe footwear. When there is a risk of splashing or airborne particles, use safety glasses or other suitable eye and face protection.
First aid – skin contact
IF ON SKIN OR HAIR: Remove contaminated clothing immediately. Rinse skin with clean water for several minutes, then wash with mild soap and water. If irritation or redness develops and persists, seek medical attention. Wash contaminated clothing before reuse.
First aid – eye contact
IF IN EYES: Rinse cautiously with clean water for several minutes, keeping eyelids open. Remove contact lenses if present and easy to do. Continue rinsing. If irritation persists, obtain medical advice.
First aid – ingestion and inhalation
IF SWALLOWED: Rinse mouth thoroughly with water. Do not induce vomiting unless instructed by a medical professional. Seek medical attention if you feel unwell.
IF INHALED: Move the person to fresh air and keep them comfortable for breathing. If coughing, breathing difficulty, dizziness or other symptoms occur, seek medical assistance.
Storage and handling
Store this product in its original closed container, in a cool, dry and well-ventilated area. Protect from extreme temperatures and direct sunlight. Keep container tightly sealed when not in use.
Avoid release to drains, natural waterways or outdoor soil. Dispose of unused product and empty containers in accordance with local regulations and the directions on the label.
Important: If medical advice is needed, keep the product label or container available. Always follow the specific instructions and safety recommendations provided by the manufacturer. This safety notice is intended as general guidance and does not replace official label directions or documentation.
| Total Nitrogen (N) | 5.0% |
|---|---|
| Ammoniacal Nitrogen (N) | 0.25% |
| Nitrate Nitrogen (N) | 4.75% |
| Soluble Potash (K2O) | 3.0% |
| Calcium (Ca) | 4.5% |
| Boron (B) | 0.02% |
| Cobalt (Co) | 0.0008% |
| Chelated Iron (Fe) | 0.01% |
| Chelated Manganese (Mn) | 0.05% |
| Molybdenum (Mo) | 0.0008% |
| Chelated Zinc (Zn) | 0.01% |
Ammoniacal Nitrogen (N) is a plant-available form of ammonium (NH₄⁺) that provides a steady, gentle source of nitrogen for healthy green growth. Unlike fast-release nitrogen types, ammoniacal nitrogen feeds plants slowly, helps stabilize root-zone pH, and works well in cooler temperatures. It is commonly used during early vegetative growth because it supports strong leaf development without burning young roots. If plants show pale leaves, slow growth, or weak stems, they may need more available ammoniacal nitrogen.
Even in tiny amounts, molybdenum is crucial because it helps plants convert absorbed nitrogen, especially nitrate, into forms they can actually use to build new growth. That makes ammonium molybdate unique from many other micronutrient sources: it supports nitrogen-use efficiency, so a shortage can make plants look nitrogen-deficient even when feeding is adequate, leading to slow growth, pale leaves, and weak vigor unless the bottleneck is fixed.
Boric acid supplies boron, which plants need in extremely small amounts to build healthy new growth and support flowering and fruit development, but the safe range is very narrow. It’s unique because deficiency shows up first in the newest tissues while excess often burns older leaf edges, so accurate diagnosis and tiny, careful corrections matter more than with most nutrients.
Boron is essential because it stabilizes cell walls, supports root and shoot growth, and regulates sugar movement throughout the plant. What makes boron unique is its limited mobility and extremely narrow range between deficiency and excess, which causes new growth to show symptoms rapidly when levels fall out of balance.
Calcium is important because it builds and stabilizes plant cells as they form, acting as the structural support that keeps new growth strong and functional. Unlike other nutrients that drive color or speed of growth, calcium’s role is unique because it controls cell wall strength and membrane stability, making it essential for healthy roots, shoots, and long-term plant resilience rather than quick visual results.
Calcium nitrate is important because it supplies calcium in a fast, highly available form that supports strong new growth and healthy root tips, while also providing nitrate nitrogen for steady, usable growth energy. It’s unique because it delivers calcium together with nitrate nitrogen, making it especially effective during rapid growth phases when plants need both structure-building calcium and immediately available nitrogen at the same time.
Chelated iron is important because it keeps iron usable for plants even when growing conditions would normally lock iron out, helping prevent the classic yellow-new-leaf symptom caused by low chlorophyll production. It is unique from other iron sources because the chelation protects iron from becoming insoluble, making it a more reliable way to correct iron-related chlorosis when regular iron can fail.
Chelated manganese is important because it keeps manganese available for photosynthesis and enzyme activity even when pH or water chemistry would normally lock it out, and it’s unique from similar micronutrients because it strongly supports the plant’s energy-processing systems that drive healthy, resilient new growth.
Chelated zinc is important because it keeps zinc available for uptake even when pH or root-zone conditions would normally lock zinc out, helping plants form normal-sized, healthy new growth—something that makes zinc uniquely different from many other nutrients that mainly affect older leaves or simple leaf color changes.
Cobalt matters because tiny amounts can support nitrogen-fixing microbes in legume root nodules, helping plants access nitrogen naturally, and it is unique from most micronutrients because its biggest impact often comes through root-zone biology rather than a simple, universal leaf deficiency pattern.
Cobalt nitrate is important because cobalt can be a limiting micro-piece for active root nodules, which helps legumes supply their own nitrogen more reliably. It’s unique because it works in extremely small amounts and acts more like a precision support for nitrogen-fixing biology than a general-purpose growth nutrient.
Molybdenum is important because it helps plants convert nitrogen into usable building blocks for chlorophyll and growth, and it’s unique from many nutrients because it mainly supports enzyme-driven “nutrient use” rather than directly building plant tissue.
Nitrate Nitrogen provides a stable, easy-to-absorb form of nitrogen that supports steady growth, strong foliage, and reliable plant development without sudden nutrient swings.
Soluble potash (K2O) is important because it helps plants control water use, move sugars to new growth and fruit, and build stronger, higher-quality structure under stress. It’s unique from many other nutrients because it acts more like a regulator and transport helper than a direct “building material,” so the biggest benefits show up as steadier growth, stronger stems, and better finishing instead of just bigger leaves.
Total Nitrogen is important because it directly drives leafy growth, chlorophyll production, and overall growth speed, which sets the pace for the entire plant. It’s unique because the “total” number can include different nitrogen forms that behave differently in the root zone, meaning the same total amount can produce very different results depending on the nitrogen type and plant stage.
Iron DTPA keeps iron dissolved and available in the root zone so plants can build chlorophyll properly in new leaves, which is why it’s so effective for yellowing at the growing tips. It’s unique because the DTPA chelate protects iron from becoming tied up as quickly as many non-chelated sources, making it a dependable fix when pH drift or water alkalinity would otherwise cause iron lockout.
Iron EDDHA is important because it keeps iron usable when alkaline conditions would normally lock iron away, helping new leaves stay green and growth stay strong. It’s unique because it remains stable and plant-available at higher pH where many other iron forms quickly stop working.
Iron EDTA keeps iron dissolved and available long enough for roots to absorb it, which is why it can quickly improve new growth color when iron is tied up in the root zone. It’s unique because the EDTA chelate balances stability and accessibility, making iron more reliably usable in mildly acidic to near-neutral conditions compared to many non-chelated iron forms.
Manganese EDTA is unique because the EDTA chelate keeps manganese stable and more available during delivery, helping plants absorb it more reliably when manganese would otherwise lock up. This matters because manganese drives key enzyme functions tied to photosynthesis and healthy new growth, so consistent availability can prevent pale, chlorotic young leaves and stalled vigor.
Potassium nitrate is often better for quick correction when the plant needs both potassium and fast nitrate nitrogen, because it dissolves cleanly and is taken up quickly, unlike potassium sources that don’t supply nitrogen. It’s unique because it can restore leaf color and growth momentum while also improving water regulation, but it can backfire if nitrogen is already high or if salt levels are already stressing the roots.
Zinc EDTA is important because it keeps zinc available in the root zone when pH or water chemistry would normally tie zinc up, helping new growth develop normally before deficiency symptoms get worse. It’s unique from other zinc forms because the EDTA chelate shields zinc in solution, making delivery more consistent when conditions are not ideal.
My plants have responded to it well and overall it’s made feeding way simpler and more effective. Definitely happy with how well it works in my setup.
1175 Stellar Drive, Unit #5
Newmarket, ON L3Y 7B8
106 Saunders Road, Unit #2A
Barrie, ON L4N 9A8
719 Krosno Boulevard
Pickering, ON L1W 1G4
915 McLeod Avenue, Unit #4
Winnipeg, MB R2G 0Y4