Biobizz Fish-Mix is a legendary organic fertilizer that has been a staple in the horticultural world for decades. This potent emulsion combines North Sea fish protein with Dutch sugar beet extract to create an explosive vegetative growth stimulant. Unlike many synthetic alternatives, Fish-Mix doesn’t just feed the plant; it conditions the entire substrate by feeding the beneficial microorganisms that live within it.
This guide provides a comprehensive breakdown of how to use Biobizz Fish-Mix and offers a clear Biobizz Fish-Mix dosage chart to ensure your plants thrive from seedling to harvest.
Section 1: The Biology of Fish-Mix
Biobizz Fish-Mix is more than just a nitrogen source; it is a “soil re-conditioner.” By utilizing a cold-pressed extraction process, Biobizz ensures that the organic proteins, lipids, and amino acids remain intact.
- NPK Ratio (5-1-4): High nitrogen content supports rapid leaf and stem development.
- Microbial Acceleration: The organic sugars from beet extract act as a fuel source for beneficial bacteria and fungi (mycorrhizae), turning “dead” dirt into a thriving ecosystem.
- Organic Certification: Fish-Mix is OMRI listed and certified by Control Union, meaning it is free from chemical acids and synthetic preservatives like BHT.
Section 2: Biobizz Fish-Mix Dosage Chart
To achieve the best results, your dosage should be tailored to the specific substrate you are using. Because Fish-Mix is highly concentrated, following the official Biobizz Nutrient Schedule is essential to prevent over-fertilization.
| Growth Stage | For Biobizz All-Mix | For Light-Mix / Coco-Mix |
| Seedlings (10-15cm tall) | 1 ml per Litre | 1 ml per Litre |
| Vegetative Phase | 1 ml per Litre | 2 – 4 ml per Litre |
| Early Flowering | 1 ml per Litre | 2 – 4 ml per Litre |
| Late Flowering | 1 ml per Litre | 4 ml per Litre |
Important Note: If you are growing outdoors, Fish-Mix is often used as a direct replacement for Bio-Grow because of its superior ability to revitalize native soil.
Section 3: How to Use Biobizz Fish-Mix Step-by-Step
1. Root Drenching
Most growers apply Fish-Mix during their regular watering routine.
- Preparation: Shake the bottle vigorously to ensure the emulsion is fully mixed.
- Mixing: Add the required dosage to your water and stir well.
- Application: Apply to the soil until you see slight runoff. Use this mixture with every watering during the vegetative cycle.
2. Foliar Feeding (The Secret Growth Hack)
Fish-Mix is mild enough to be absorbed directly through the leaves, providing an almost instant nutrient boost.
- Dosage for Spraying: Dilute 1–2 ml per Litre of water.
- Timing: Spray your plants 1–3 times per week during the vegetative stage. Always spray when the lights are off or in the evening to prevent “leaf burn” from the sun or grow lights.
- Pro Tip: Combine Fish-Mix with Alg-A-Mic at 1ml/L each for an ultimate organic foliar tonic.
Section 4: Key Considerations for Success
- The Aroma: Because it is made from real North Sea fish, this product has a very strong, pungent smell. For this reason, it is highly recommended for outdoor use or indoor gardens with high-quality carbon filters.
- Freshness Matters: Only mix what you intend to use immediately. Once mixed with water, organic nutrients begin to break down and the smell will intensify significantly after 24 hours.
- pH Balancing: While Biobizz products are self-regulating to an extent, you should always check the pH of your final solution. According to the Royal Horticultural Society (RHS), a pH of 6.2–6.5 is ideal for organic soil uptake.
Expert Summary: Fish-Mix vs. Bio-Grow
While both are vegetative boosters, Fish-Mix is the “heavy hitter.” It is designed to transform poor-quality soil into a mineral-rich medium within days. If you are growing indoors and are sensitive to smells, stick with Bio-Grow. However, if you want the most vigorous, lush green growth possible—especially in outdoor environments—Fish-Mix is the superior choice.
Video: How to Apply Biobizz Nutrients Correctly
Biobizz Official Usage Guide (This resource provides a visual breakdown of mixing and applying the Biobizz range for maximum yield).
Ready to supercharge your soil? View the full Biobizz Range at The Horticulture Company today.