Grotek Monster Grow Pro (18-36-1)

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GrotekSKU: HF-GSP-770006225

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Grotek Monster Grow Pro (18-36-1)

Grotek Monster Grow Pro (18-36-1) is a concentrated water-soluble growth booster designed to support vigorous vegetative growth, improved root establishment and stronger plant structure. Formulated with a powerful blend of mineral and organic nutrients, Monster Grow Pro helps plants build the foundation they need before entering the flowering stage.

With its 18-36-1 formula, Grotek Monster Grow Pro provides strong nitrogen and phosphorus support for lush green growth, root development, canopy expansion and overall plant vigor. It is an excellent addition to nutrient programs during the vegetative and pre-flower stages when plants require strong structural and metabolic support.

Why Choose Grotek Monster Grow Pro

  • Concentrated vegetative growth booster
  • NPK formula: 18-36-1
  • Supports lush green growth
  • Helps improve secondary root establishment
  • Supports stronger plant structure
  • Helps improve leaf area and canopy development
  • Contains mineral and organic nutrient sources
  • Supports plant vigor during fast growth
  • Ideal for vegetative and pre-flower stages
  • Water-soluble powder for easy mixing
  • Suitable for soil, soilless and water culture systems
  • 500g makes up to 5000L of solution

Vegetative and Pre-Flower Support

Grotek Monster Grow Pro is designed for the stages when plants are building roots, stems, leaves and overall structure. Strong vegetative growth helps create a better foundation for later flowering and fruiting, making this product a valuable part of a complete feeding program.

Its nitrogen content supports green leafy growth and canopy development, while the high phosphorus level helps support root activity, plant metabolism and vigor during rapid growth periods.

Mineral and Organic Nutrient Blend

Monster Grow Pro contains a blend of mineral and organic nutrients to support efficient plant development. The formula includes nitrogen from both mineral and organic sources, along with phosphorus and plant-supporting ingredients that contribute to stronger growth and improved root-zone performance.

This makes it a practical choice for growers who want a concentrated dry supplement to help push plant growth during vegetative and transition periods.

Ideal For

  • Vegetative growth
  • Pre-flower support
  • Root establishment
  • Secondary root development
  • Green leafy growth
  • Canopy expansion
  • Stronger plant structure
  • Soil growing
  • Soilless media
  • Coco-based growing
  • Peat-based systems
  • Water culture systems
  • Indoor gardens
  • Greenhouse crops
  • Growers using complete nutrient programs

Guaranteed Analysis

  • Total Nitrogen (N): 18%
  • Available Phosphoric Acid (P₂O₅): 36%
  • Soluble Potash (K₂O): 1.0%

Derived From

  • Diammonium phosphate
  • Soy protein hydrolysate
  • Kelp

How to Use

Use Grotek Monster Grow Pro during the vegetative and pre-flower stages of crop growth.

Soil, Soilless and Water Culture:

  • Mix 3 g per 19 L of water
  • Imperial equivalent: 2/3 tsp per 5 gal of water
  • Repeat weekly throughout the vegetative growth period
  • Mix thoroughly until fully dissolved
  • Apply as part of a balanced nutrient program

Important Use Notes

  • Use during vegetative and pre-flower growth
  • Mix completely before applying
  • Use with a complete base nutrient program
  • Avoid over-application due to the concentrated formula
  • Follow the product label for crop-specific recommendations
  • Store in a cool, dry place with the lid sealed tightly
  • Keep out of reach of children and pets

Concentrated Growth Support for Stronger Plants

Grotek Monster Grow Pro (18-36-1) is a powerful choice for growers who want to support roots, foliage, canopy growth and plant structure before flowering. With a concentrated water-soluble formula, strong 18-36-1 nutrient profile and mineral-organic ingredient blend, Monster Grow Pro helps plants develop the strength and vigor needed for productive growth.

Note: Always follow the product label and Grotek’s official recommendations for proper dosage, application timing, compatibility and storage.

Order Confirmation

As soon as your order is placed, an order confirmation will be sent to the email address you used to place the order. This means we have received your order and payment. Payment is captured as soon as the order is placed. In rare cases, if the product is on backorder or unavailable, we will contact you and ask if you would like to wait for the product to become available, switch your product, or have your payment refunded. If the item is available for shipment we will submit the order for processing and arrange shipment. Please see current estimated lead times on the product page for each product.

Shipping

Most products ship within 1 to 3 business days. Some items might take longer as they are delivered from our warehouse in Vancouver. As soon as we receive your tracking number, we will send it over to you.

Free Shipping

Free shipping is available across all provinces throughout Canada for orders over 149$.

International Orders

Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or other couriers. Most quotes can be obtained at checkout. If not, you can email us at info@canadagrowsupplies.com for some more information on shipment. Items shipped internationally from the USA may have VAT, duties, taxes, and/or local charges due at delivery. These charges are the responsibility of the customer and not Canada Grow Supplies Inc.

Cancellations

If you need to cancel your order, we recommend reaching out to us ASAP. We charge a 2.9% (credit card), 3.5% (PayPal), 4.0% (PayPal International), 4.1% (American Express), or 6.5% (Shop Pay Installments or Sezzle) order cancellation fee after the order was received. We can accommodate most requests, but due to the different time zones and schedules that our warehouses ship from, sometimes the cancellation request may not reach the warehouse in time before the product ships. Once the item has been arranged to ship or has shipped, the package will be treated like a 'return' and is subject to ship-back fees and restocking fees. If you purchased 'Route Package Protection', this can not be refunded after the order has shipped.

Returns

In order to make sure you are completely satisfied, we can send you a return label within 14 days of receiving the order. This is to guarantee that you are happy with the product. Some products might require a 10-25% restocking fee. Please visit our full return policy.

Why Canada Grow Supplies?

We’re glad you clicked here. It means you’d like some reassurance and we totally understand that.

1. We’ve had thousands of shipped orders and satisfied customers.

We started our business in 2020 with the intention of creating a one-stop shop for growing supplies without letting customers wait for their orders. We saw the potential to serve customers of this industry way better than they’ve been treated in the past.

2. We’re a small, Canadian, family-owned business.

Our small team overlooks every customer and their orders to ensure they are satisfied with their products. We answer the phone and website chat, and if we don’t, we get back to you within 6 hours or less! We even throw in some freebies at random.

3. Free Discreet Shipping Available in Canada

We offer free shipping on all orders over 149$ Canada-wide. Many companies have a weight limit for free shipping, we don’t!

4. 100% Lowest Price on the Market - Price Match Guarantee

We keep the best prices on the market at all times. If the price respects the companies’ lowest retail price, we will definitely price-match any other Canadian website.

5. Reliable International Shipping

Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or similar couriers. Go through the checkout process to receive a shipping quote or contact us if a shipping quote is not available at checkout.

6. Easy financing and interest-free payments

Finance your purchase within minutes without paying interest!

Sezzle: Buy what you want today and pay for it over four installments, interest-free. Look for the Sezzle button at checkout. Get approved up to $2,500.

7. We are authorized resellers with manufacturer’s warranty

You will buy confidently from us since only sell new, official products (no used items or clones). All warranties are new are 100% honored through the respective manufacturer.

8. Safe, Secure and Discreet Transactions

We accept major credit cards and debit cards, PayPal, Google Pay, Apple Pay, Sezzle, bank transfers, and money orders. All card payments are processed through our encrypted SSL security processing system. Your identity is always protected.

9. Hassle-free returns

Just in case your purchase was not up to your standards, we offer return shipping if you are not 100% satisfied for any reason

10. Route Package Protection

Adding Route Package Protection to your order at checkout means that your order is protected against being lost, damaged, or stolen. In the unfortunate instance that you experience one of these inconveniences, you can report an issue with Route and they will work with you to make sure you get the resolution you prefer.

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