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Grotek Monster Grow Pro - 2.5 KG

Regular price $210.32
Regular price Sale price $210.32
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Description

Grotek Monster Grow Pro is a water-soluble powder grow additive for vegetative growth, built to optimize growth with targeted nutrient ratios that support vigorous early plant development. Think of it as a vegetative growth supplement and plant growth enhancer that focuses on building a stronger plant framework before bloom timing arrives.

Monster Grow Pro is formulated to support lush green growth, improved root establishment, and stronger plant structure during the grow phase. It’s a highly concentrated formula, so you get a focused boost without turning your nutrient lineup into something complicated. When plants are pushing new growth, this product supports overall canopy growth while promoting a healthier, more developed root zone.

Two standout performance anchors are baked into the way Monster Grow Pro is positioned: it supports secondary root establishment and it improves leaf area index. Better secondary root establishment supports a stronger foundation in the root zone, which helps plants stay steadier as they size up. An improved leaf area index supports more productive green growth, giving plants more surface area to drive development through the vegetative window.

This grow additive contains a blend of mineral and organic nutrients that are described as essential for vigorous plant growth. Its NPK is 18-36-1, emphasizing nitrogen plus high levels of phosphorus with a small potassium contribution for the vegetative and pre-flower stages. Nitrogen derived from both mineral and organic sources is highlighted for improved leaf production and size, while high levels of phosphorus are paired with key proteins to support plant metabolism and contribute to improved plant vigour.

The inputs behind the formula are clearly defined. Monster Grow Pro is derived from diammonium phosphate, soy protein hydrolysate, and kelp, combining mineral nutrition with an organic protein source plus kelp to support early development goals. If you want a water-soluble powder that targets vegetative performance and the transition to flowering, this is a good fit for hydroponics and soilless (peat/coco) setups where growers prioritize root development, canopy development, and strong plant structure before bloom.

Product benefits: Vegetative Stage; Indoor; Outdoor; Regular Watering; Watering Systems; Hydroponics; Coco Coir Safe; Soil; Soilless; Vigorous Growth; Lush Foliage; Root Development; Stronger Structure; Canopy Health; Root Formation Support; Plant Vigor; Transition Support.

Guaranteed analysis: Total Nitrogen (N): 18.0%; Available Phosphoric Acid (P2O5): 36.0%; Soluble Potash (K2O): 1.0%.

Derived from: Diammonium Phosphate; Soy Protein Hydrolysate; Kelp Extract.

How To Use

How to Use Grotek Monster Grow Pro - 2.5 KG

Step-by-step mixing and feeding instructions for Grotek Monster Grow Pro - 2.5 KG.

Mixing & preparation

Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of Grotek Monster Grow Pro - 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.

Week-by-week feeding schedule

Vegetative stage — Grow Pro

  • Week 1: mix 0.158 g per litre of water or nutrient solution.
  • Week 2: mix 0.158 g per litre of water or nutrient solution.
  • Week 3: mix 0.158 g per litre of water or nutrient solution.
  • Week 4: mix 0.158 g per litre of water or nutrient solution.

Flowering stage — Grow Pro

  • Week 1: do not use this product during this week of flowering.
  • Week 2: do not use this product during this week of flowering.
  • Week 3: do not use this product during this week of flowering.
  • Week 4: do not use this product during this week of flowering.
  • Week 5: do not use this product during this week of flowering.
  • Week 6: do not use this product during this week of flowering.
  • Week 7: do not use this product during this week of flowering.
  • Week 8: do not use this product during this week of flowering.

Tips for best results

  • Maintain pH and EC/ppm within the range recommended for your growing medium and crop.
  • Use fresh nutrient solution whenever possible and avoid leaving mixed solution stagnant for long periods.
  • Store nutrients in a cool, dark place away from direct sunlight and extreme temperatures.
  • Keep bottles tightly sealed when not in use to reduce air exposure and preserve product quality.
  • Use clean measuring tools and regularly rinse or clean your reservoir, lines, and irrigation equipment.

Common mistakes to avoid

  • Do not mix different nutrients or additives together in concentrated form before adding them to water.
  • Do not exceed the recommended dosage unless you are following a tested, crop-specific feeding plan.
  • Do not skip pH or EC/ppm checks when growing in hydroponic or soilless systems.
  • Do not allow the nutrient solution to freeze or overheat, as this can damage the formulation.
  • Do not ignore the directions on the product label for your specific crop, growth stage, and system type.

Warnings & Safety

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.

Guaranteed Minimum Analysis

Frequently Asked Questions

Why is total nitrogen (N) important for plant growth, and what makes it different from other nutrients?

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.

What does available phosphoric acid (P₂O₅) do for plants, and how is it different from available phosphate?

Available phosphoric acid provides a fast-absorbing form of phosphorus that fuels root growth, energy transfer, and strong flowering. It becomes part of the plant’s total available phosphate supply, but the two terms are not the same—available phosphoric acid is one source of phosphorus, while available phosphate refers to the entire pool of plant-available phosphorus overall.

Why is soluble potash (K2O) important for plants?

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.

What does diammonium phosphate do for plant growth?

Diammonium phosphate provides water-soluble phosphorus for plant energy transfer and root development, plus ammonium nitrogen to support active growth, making it especially effective during early establishment and high-demand growth phases. It’s unique because it delivers phosphorus and ammonium together, which can boost growth quickly but also changes root-zone pH and salt balance, so correct dosing and stable conditions matter.

What does soy protein hydrolysate do for plants?

Soy protein hydrolysate supplies small peptides and amino acids that can support faster stress recovery and more efficient nutrient use, especially when roots are establishing or plants are under high demand. It is unique because it acts like both a quick organic building-block source and a gentle biological cue, rather than simply adding another mineral nutrient.

What does kelp extract actually do for plant growth?

Kelp extract supports plant growth by acting as a biostimulant that helps roots stay active, improves stress tolerance, and encourages steadier new growth without functioning like a heavy fertilizer. It’s unique because it influences plant processes and recovery more than it supplies major nutrients, so it works best as supportive “management help” rather than a direct N-P-K replacement.

Safety & Technical Documents

View full details
Nutrient Feed Chart

Vegetative — Grow Pro

Flowering — Grow Pro

Product Comparison