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Future Harvest Royal Black Humic Acid - 1 Litre

Future Harvest Royal Black Humic Acid - 1 Litre

Regular price $18.46
Regular price Sale price $18.46
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Description

Future Harvest Royal Black Humic Acid is a liquid humic acid supplement for improving nutrient absorption and supporting root development across all stages. It’s a humic acid additive that helps plants make better use of essential minerals for steadier growth.

Royal Black is OMRI listed for organic use and built around natural chelating agents that help transport essential minerals through the plant. By supporting more efficient nutrient absorption, it helps reduce the “wasted” gap between what’s present in your program and what the plant can actually take up. Future Harvest highlights this chelation-driven support for key minerals such as magnesium, calcium, and iron, making Royal Black a practical choice when you want stronger mineral utilization without changing your core nutrition approach.

Beyond nutrient movement, Royal Black is designed to support root performance in ways that show up in the plant’s day-to-day vitality. Future Harvest notes root support and enhanced enzymatic function, which ties directly to how efficiently a plant can turn available inputs into growth. It’s also described as increasing vitality in seedlings and clones, giving it a clear role in early-stage plant health while still staying relevant through mature growth.

The facts layer is compact: Royal Black is 0-0-1. At the heart of the formula is fulvic acid alongside humic acid, which Future Harvest positions as “carrier” compounds that help transport nutrients and vitamins into the plant with higher efficiency. The key inputs are humic substances sourced from an oxidized lignite humic acid fraction, keeping the product aligned with the classic humic-and-fulvic function growers shop for.

Royal Black is often chosen as a coco pre-treatment option, especially in coco mediums where consistent nutrient movement can make a visible difference in early root establishment. It’s also identified for hydroponics, making it a strong fit for controlled-environment growers who want a humic acid supplement that supports vigorous plant vitality and efficient nutrient utilization without adding extra complexity.

Future Harvest Royal Black Humic Acid is a good fit for growers who want an OMRI listed humic acid additive with fulvic acid, natural chelating agents, and clear root development support from seedlings and clones through finishing stages.

How To Use

How to Use Future Harvest Royal Black Humic Acid - 1 Litre

Step-by-step mixing and feeding instructions for Future Harvest Royal Black Humic Acid - 1 Litre.

Mixing & preparation

Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of Future Harvest Royal Black Humic Acid - 1 Litre 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 — Royal Black

  • Week 1: mix 1.32 ml per litre of water or nutrient solution.
  • Week 2: mix 1.32 ml per litre of water or nutrient solution.
  • Week 3: mix 1.32 ml per litre of water or nutrient solution.
  • Week 4: mix 1.32 ml per litre of water or nutrient solution.

Flowering stage — Royal Black

  • Week 1: mix 1.32 ml per litre of water or nutrient solution.
  • Week 2: mix 1.32 ml per litre of water or nutrient solution.
  • Week 3: mix 1.32 ml per litre of water or nutrient solution.
  • Week 4: mix 1.32 ml per litre of water or nutrient solution.
  • Week 5: mix 1.32 ml per litre of water or nutrient solution.
  • Week 6: mix 1.32 ml per litre of water or nutrient solution.
  • Week 7: mix 1.32 ml per litre of water or nutrient solution.
  • Week 8: mix 1.32 ml per litre of water or nutrient solution.

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

Derived From

Frequently Asked Questions

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 potassium humate actually do for plant roots?

Potassium humate helps the root zone hold and exchange nutrients more smoothly and often improves how consistently roots can access water and minerals, which supports steadier growth with fewer swings. It’s unique because it works mainly by improving nutrient availability and root-zone stability rather than acting as a direct fertilizer or a strong growth stimulant.

View full details
Nutrient Feed Chart

Vegetative — Royal Black

Flowering — Royal Black

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