• Grotek Vital - 500 ML
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Product benefits

  • Calcium Support
  • Stronger Structure
  • Plant Vigor
  • Targeted Support
  • Consistent Performance
  • Plant Health
  • Nitrogen Uptake Support
  • Energy Conversion

This product may offer additional benefits beyond those listed.

Frequently purchased together

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Grotek Vital - 500 ML

Vegetative Stage Flowering Stage Indoor Outdoor Regular Watering Watering Systems Hydroponics Coco Coir Safe Soil Soilless
$34.56
$34.56
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Product benefits

  • Calcium Support
  • Stronger Structure
  • Plant Vigor
  • Targeted Support
  • Consistent Performance
  • Plant Health
  • Nitrogen Uptake Support
  • Energy Conversion

This product may offer additional benefits beyond those listed.

Description
Grotek Vital is a calcium supplement designed to support plant structure and overall vigor, giving you a targeted calcium nutrient supplement when your garden needs more calcium support.

Vital is built around an isolated calcium component, which makes it easier to fine-tune calcium without changing the rest of your nutrient approach. Calcium plays a central role in how plants build new tissue, so this calcium fertilizer is positioned for growers who want steadier development and fewer structural weak points as plants grow. One of the defining features is its ultra-low chloride content, supporting better health for both plants and the growing medium.

This calcium supplement is also known for how it helps build plant structure, supporting stronger growth habits that hold up better during active development. Vital is described as a product that improves nutrient conditions and supports plant vigor, especially when plants are moving fast and demand rises. It also assists in times of peak growth, when calcium can become a limiting factor for quality growth and overall performance.

Beyond basic structural support, Vital is positioned to optimize conditions for improved starch metabolism and catalytic ability, two behind-the-scenes functions tied to how plants convert and move energy during rapid development. Calcium is also described as supporting nitrate uptake and metabolism, making this product a practical match for programs that rely on nitrate-based nutrition. If your goal is a cleaner, more consistent nutrient environment, this calcium supplement keeps the focus on strengthening the plant’s foundation and supporting efficient internal processes rather than chasing short-term visual changes.

Vital is an excellent choice for all gardens, but it’s especially emphasized as a necessity when growing in coco. Coco-based and soilless setups can benefit from having a dedicated calcium supplement available, and Vital is positioned as excellent for coir gardeners who want more control over calcium levels without adding unnecessary extras. It’s also presented for soil-less culture, making it a natural fit for soilless media-focused growing.

The input behind this product is described as a calcium carbonate source that’s presented as a water-soluble calcium form, keeping the formula centered on a straightforward calcium role. If you want an isolated calcium component with ultra-low chloride content that supports plant structure, supports plant vigor, and assists in times of peak growth, Grotek Vital is a strong, focused option for coco and other soilless gardens that need targeted calcium support.

Product benefits: Vegetative Stage; Flowering Stage; Indoor; Outdoor; Regular Watering; Watering Systems; Hydroponics; Coco Coir Safe; Soil; Soilless; Calcium Support; Stronger Structure; Plant Vigor; Targeted Support; Consistent Performance; Plant Health; Nitrogen Uptake Support; Energy Conversion.

Guaranteed analysis: Calcium (Ca): 5.0%.

Derived from: Calcium Carbonate.

How To Use

How to Use Grotek Vital - 500 ML

Step-by-step mixing and feeding instructions for Grotek Vital - 500 ML.

Mixing & preparation

Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of Grotek Vital - 500 ML 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 — Vital

  • Week 1: mix 1.0 ml per litre of water or nutrient solution.
  • Week 2: mix 1.0 ml per litre of water or nutrient solution.
  • Week 3: mix 2.0 ml per litre of water or nutrient solution.
  • Week 4: mix 2.0 ml per litre of water or nutrient solution.

Flowering stage — Vital

  • Week 1: mix 3.0 ml per litre of water or nutrient solution.
  • Week 2: mix 3.0 ml per litre of water or nutrient solution.
  • Week 3: mix 3.0 ml per litre of water or nutrient solution.
  • Week 4: mix 3.0 ml per litre of water or nutrient solution.
  • Week 5: mix 3.0 ml per litre of water or nutrient solution.
  • Week 6: mix 2.0 ml per litre of water or nutrient solution.
  • Week 7: mix 2.0 ml per litre of water or nutrient solution.
  • 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
Calcium (Ca) 5.0%

Derived From
Calcium Carbonate

Frequently Asked Questions
Why is calcium important for plant growth?

Calcium is important because it builds and stabilizes plant cells as they form, acting as the structural support that keeps new growth strong and functional. Unlike other nutrients that drive color or speed of growth, calcium’s role is unique because it controls cell wall strength and membrane stability, making it essential for healthy roots, shoots, and long-term plant resilience rather than quick visual results.

Read the full guide

Why do growers use calcium carbonate for plants instead of a fast calcium source?

Calcium carbonate is important because it supplies calcium while gently buffering acidity in the root zone, helping nutrients stay available and uptake stay consistent over time. It’s unique because it works gradually as a stabilizer, rather than acting like a quick, soluble calcium boost that can spike levels and create new imbalances.

Read the full guide

Frequently purchased together

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Nutrient Feed Chart

Vegetative — Vital

Flowering — Vital

Product Comparison