Grotek Carbo-Max: energy for flowering, starting at the roots
During flowering, plants run at full power, and so do their roots. Around them lives a whole world of micro-organisms that help break down nutrients. Carbo-Max from Grotek feeds them what they like best: simple sugars. A dextrose and potassium powder added to your nutrients throughout flowering to support flower ripening.
How does Carbo-Max work?
- Dextrose, a simple, highly soluble sugar that fuels microbial life in the root zone.
- More available nutrients: Grotek links this microbial activity to better nutrient availability during flowering.
- Potassium (K₂O 1%) to support flower ripening.
Specifications
| Brand | Grotek (Canada) |
| Type | Soluble sugar and potassium supplement |
| Composition | Dextrose and potassium chloride, K₂O 1% |
| Phase | Entire flowering phase |
| Growing media | Soil, coco, peat and hydroponics |
| Sizes | 300 g and 700 g |
Dosage and directions
- Manufacturer’s dose: 100 g per 380 litres of water, about 0.26 g per litre.
- When: with every feed or reservoir change throughout flowering.
- Mixing: weigh on precision scales and dissolve the powder completely before watering.
- Hydroponics: sugar also encourages residue. Keep reservoirs and lines clean and maintain the system regularly.
In your Grotek bloom programme
Carbo-Max complements your bloom base nutrient, such as Grotek Solo-Tek Bloom, and pairs with the PK booster Monster Bloom. Browse the full range in our Grotek nutrients category.
FAQ
What’s the difference between Carbo-Max and Heavy Bud Pro?
Carbo-Max is mainly a source of simple sugar (dextrose) for microbial life. Heavy Bud Pro combines fermented molasses, potassium and trace elements for ripening. They can complement each other.
Can I use it during growth?
The manufacturer recommends it throughout flowering, which is when it is most useful.
How much solution does a 700 g tub make?
At the manufacturer’s dose, about 2,600 litres.


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