Description
Quick Answer
Grotek Monster Grow Pro is a concentrated, water-soluble 18-36-1 vegetative growth additive for hydroponic and soilless peat or coco systems. Mix 3 g into 19 L of water and apply once weekly throughout the vegetative growth period, following the product label.
Product Description
Monster Grow Pro combines mineral and organic nutrient sources to support green vegetative growth, secondary root establishment and plant structure. Grotek recommends adding it to an existing fertility program during vegetative and pre-flower stages.
Key Features
- Guaranteed analysis: 18-36-1.
- Water-soluble powder for easy reservoir mixing.
- Supports secondary root establishment and leaf-area development.
- Suitable for hydroponics and soilless peat or coco growing systems.
- Highly concentrated: 500 g makes up to 5,000 L at the official application rate.
Available Sizes and Variants
- 130 g
- 500 g
- 2.5 kg
Select the required size above. Availability and price are shown for each live variant.
Specifications
| Product type | Concentrated vegetative growth additive |
|---|---|
| Form | Water-soluble powder |
| Guaranteed analysis | Total Nitrogen 18%; Available Phosphoric Acid (P₂O₅) 36%; Soluble Potash (K₂O) 1% |
| Derived from | Diammonium phosphate, soy protein hydrolysate, seaweed extract and potassium hydroxide |
| Growth stage | Vegetative and pre-flower transition |
| Compatible systems | Hydroponics and soilless peat/coco |
| Mixing rate | 3 g per 19 L of water |
| Frequency | Once weekly throughout vegetative growth |
Package Contents
One container of Grotek Monster Grow Pro in the selected size.
Directions for Use
- Measure 3 g of powder for every 19 L of water.
- Add the powder to the nutrient solution and mix thoroughly until dissolved.
- Apply once weekly during the vegetative growth period.
- Use during vegetative and pre-flower stages as part of an existing fertility program.
Always follow the directions printed on the product label and adjust the wider feeding program to suit the crop and growing conditions.
Care, Storage and Safety
- Keep the container tightly closed in a dry, cool and well-ventilated place.
- Keep out of reach of children.
- Avoid contact with eyes and skin and avoid breathing dust.
- Use suitable personal protective equipment and good hygiene practices when handling.
- Prevent spills from entering waterways; the safety data sheet identifies long-lasting aquatic toxicity.
- Dispose of product and packaging according to applicable local regulations.
Buyer FAQs
What is the NPK analysis?
Monster Grow Pro has a guaranteed analysis of 18-36-1.
How much should I use?
Mix 3 g into 19 L of water and apply once weekly throughout vegetative growth.
Can I use it in coco or hydroponics?
Yes. Grotek lists the product for hydroponic and soilless peat or coco systems.
When should I use Monster Grow Pro?
Use it during vegetative growth and the transition into pre-flower as part of an existing fertility program.
Which sizes are sold on this page?
The live Shopify variants are 130 g, 500 g and 2.5 kg.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Estimate shipping
Customer Reviews
This is a ripper of a product. It's made a massive difference to my grow. I'm one happy customer.
Solid as a rock. This is a quality piece of kit that will last for years. Very happy with it.
This is the best thing since sliced bread. It's made my setup so much more efficient.
I'm stoked with this. It's a top-quality product that's worth every penny. Five stars.
This is a fantastic bit of gear. It's made a huge difference to my plants. Highly recommend.
I'm so glad I found this. It's a game-changer for my grow. You've got a customer for life.
This is a quality product. It's clear that a lot of thought went into the design. Very impressed.
I'm blown away by this. It's made my life so much easier. My plants are thriving.
This is a must-have. It's made a massive difference to my setup. Couldn't be happier.
Top-notch stuff. You can feel the quality. It's a proper piece of equipment that's built to last.
