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
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Grotek Carbo-Max™ is a bloom additive made from water-soluble simple sugars for supporting the root zone and helping plants finish strong through the ripening stage. It’s a carbohydrate supplement designed to energize both plants and the living community around the roots during late-cycle demand.
Simple sugars are central to what Carbo-Max™ does. This rapid energy source is intended to support soil microorganisms and feed soil organisms, helping keep the root-zone environment active when flowering plants are putting significant energy into finishing. With a more energized root zone, mineral metabolism can run more efficiently, which supports nutrient availability when plants need it most.
Carbo-Max™ is positioned for use throughout the blooming cycle, with its strongest emphasis on the ripening stage. That late-stage focus matters because this is when plants can benefit from steadier energy support while they direct resources into flowers and fruit. By supporting nutrient availability during this energy-intensive phase, Carbo-Max™ helps keep development moving forward without shifting the product’s role into a broad base nutrient.
Alongside its simple sugar foundation, Carbo-Max™ includes added potassium for ripening stage performance. Potassium plays a key role in late-cycle plant function, and this added potassium is highlighted for supporting high levels of sugar in flowers and fruit. The result is a clean, finishing-focused profile that targets bloom completion while keeping the emphasis on energy support and root-zone biology.
The ingredient base is intentionally straightforward. Carbo-Max™ is derived from dextrose and potassium chloride, aligning with its role as a water-soluble simple sugars product with added potassium. That simplicity makes it easy to understand what you’re buying: a soluble formula built around accessible sugars plus a potassium input that supports late flowering priorities.
Carbo-Max™ is suitable for hydroponics and soilless (peat/coco) growing. It’s a good fit for growers who want a simple sugar bloom additive that supports soil microorganisms, improves nutrient availability during the ripening stage, and helps plants finish with strong root-zone energy and bloom-cycle focus.
Step-by-step mixing and feeding instructions for Grotek Carbo Max - 2.5 KG.
Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of Grotek Carbo Max - 2.5 KG 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 — Carbo Max
Flowering stage — Carbo Max
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.
| Soluble Potash (K2O) | 1.0% |
|---|
Dextrose can support plant growth by quickly feeding beneficial root-zone microbes, which can improve nutrient cycling and root activity, and it’s unique because it provides fast, simple energy compared to slower, more complex carbohydrate sources that don’t trigger such an immediate biological response.
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.
Yes, potassium chloride can cause leaf tip and edge burn in potted plants because it raises root-zone salinity quickly and adds chloride that can build up over time. It’s important and unique because it delivers potassium in a very concentrated salt form, so small dosing mistakes or poor flushing can create stress even when potassium itself is beneficial.

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