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x5 Pack Light-Mix Biobizz Potting Soil 20L (100L) — Organic Substrate Indoor LED Grow
100 L of Biobizz substrate to start any indoor grow — Five 20 L bags of Light-Mix, steam-pasteurised at 180 °C: premium drainage, low pre-feed and the organic potting soil of choice for seedlings, cuttings and young plants under LED.
Selected by BloomLED, growshop expert in LED horticultural lighting, designed in France and trusted by indoor growers for over 10 years.
5 × 20 L · 100 L total · Steam-pasteurised 180 °C · Low pre-feed · Organic & drip-compatible
Light-Mix 20L Soil Bag - Biobizz | Indoor LED Growing Substrate
Optimize your indoor crop's start — Perfect for seedlings, cuttings, and young plants under horticultural LED lighting.
Trust BloomLED, your French expert for over 10 years in high-performance indoor growing solutions.
20L · Not pre-fertilized · pH stable · Biobizz
Light-Mix 20L Soil Bag - Biobizz | Indoor LED Growing Substrate
Optimize your indoor crop's start — Perfect for seedlings, cuttings, and young plants under horticultural LED lighting.
Trust BloomLED, your French expert for over 10 years in high-performance indoor growing solutions.
20L · Not pre-fertilized · pH stable · Biobizz
Light-Mix 20L Soil Bag - Biobizz | Indoor LED Growing Substrate
Optimize your indoor crop's start — Perfect for seedlings, cuttings, and young plants under horticultural LED lighting.
Trust BloomLED, your French expert for over 10 years in high-performance indoor growing solutions.
20L · Not pre-fertilized · pH stable · Biobizz
Light-Mix 20L Soil Bag - Biobizz | Indoor LED Growing Substrate
Optimize your indoor crop's start — Perfect for seedlings, cuttings, and young plants under horticultural LED lighting.
Trust BloomLED, your French expert for over 10 years in high-performance indoor growing solutions.
20L · Not pre-fertilized · pH stable · Biobizz
Light-Mix 20L Soil Bag - Biobizz | Indoor LED Growing Substrate
Optimize your indoor crop's start — Perfect for seedlings, cuttings, and young plants under horticultural LED lighting.
Trust BloomLED, your French expert for over 10 years in high-performance indoor growing solutions.
20L · Not pre-fertilized · pH stable · Biobizz
Pack description
x5 Light-Mix Biobizz 20L Pack (100L) — Organic Substrate for Indoor LED Growing
Five 20-litre bags of Biobizz Light-Mix, a total of 100 litres of light organic substrate with low pre-fertilisation, perfect for kicking off any indoor grow under LED horticultural lamps. Steam-pasteurised at 180 °C, this potting soil delivers a clean, free-draining environment and leaves you in full control of feeding for vigorous seedlings, cuttings and young plants. The ideal pack format for growers who want to secure several cycles ahead or fit out a complete grow space with the reference Biobizz quality every growshop knows.
| Feature | Value |
|---|---|
| Brand | Biobizz |
| Model | Light-Mix 20L |
| Quantity | 5 × 20 L bags — 100 L total |
| Composition | Light organic substrate, blond peat, fibres, 180 °C steam pasteurisation |
| Use | Seeding, cloning, young plants, early indoor growth |
| Compatibility | Organic liquid nutrients, manual or automated drip irrigation |
| Weight | ≈ 6–7 kg / bag (≈ 34 kg total) |
| Packaging | Sealed Biobizz bags, shipped in a single ready-to-store parcel |
🌱 Express root start
The airy texture and light pre-feed of Light-Mix promote fast root development from germination or cloning. Under a horticultural LED, metabolism ramps up and young plants visibly gain vigour within the first days.
💧 Premium drainage & oxygenation
The fibrous structure prevents compaction and over-watering, two major causes of indoor crop losses. Water drains easily, roots breathe and make full use of the LED full-spectrum light in your grow tent.
🛡️ 180 °C pasteurisation
Before bagging, each batch is steam-treated at 180 °C by Biobizz: insects, larvae, fungi and unwanted seeds are neutralised. Every cycle starts on a clean substrate, free of chemical inputs and surprises.
⚖️ Total nutrition control
Pre-fertilisation is deliberately low so you can finely tune your BioGrow, BioBloom or any other liquid feeding schedule. You steer light PPFD and nutrition in parallel for fully personalised cycles.
💡 Cost-efficient 100 L format
Five bags delivered in one parcel: kit out a full grow space or stock several cycles ahead, at a price per litre lower than buying single bags. Built for serious growers who plan ahead.
Light-Mix is designed for the start-up phase: germination, cloning and early growth. Its low nutrient load lets the grower dial in feeding step by step, making it the reference substrate for young plants under LED. For flowering, complement it with a richer soil like All-Mix or with a suitable BioBloom feeding program.
How many pots will a 100 L pack fill?As a guide: about 25 × 4 L pots, 14 × 7 L pots or 9 × 11 L pots. For larger fabric pots or airpots, count about 5 × 20 L containers. The x5 pack is sized for a full 1.2 × 1.2 m tent or to prepare several grow cycles in advance.
Should I add perlite or pouzzolane?Not necessarily: Light-Mix is already lightened for excellent drainage. However, if you grow in large containers (>20 L) or your water is very hard, adding 10–20 % perlite can boost root aeration over longer cycles.
How should I store the bags before use?Keep them closed, away from frost, direct moisture and sunlight. Stored dry, the bags retain their organic properties for several months. Open one bag at a time and use it promptly to preserve the natural microbial flora of the substrate.
The winning combo: a clean, free-draining Biobizz Light-Mix + a BloomLED full-spectrum LED light = explosive young plants from week one, with no fertiliser excess.
Pack content
Optimize your indoor crop's start — Perfect for seedlings, cuttings, and young plants under horticultural LED lighting.
Trust BloomLED, your French expert for over 10 years in high-performance indoor growing solutions.
20L · Not pre-fertilized · pH stable · Biobizz
Light-Mix 20L Biobizz Soil Bag: The Ideal Substrate for a Successful Start under LED
At BloomLED, we know that the foundation of a successful indoor grow is a quality substrate. The Light-Mix 20L Soil from Biobizz is specially designed to provide your plants with an optimal environment from the very first stages of their life, in perfect synergy with the efficiency of your horticultural LED lamps. This light and aerated substrate is the key to vigorous rooting and healthy growth, without the risk of over-fertilization.
Biobizz Light-Mix is a premium growing substrate, renowned for its airy composition and low nutrient content. It's the preferred choice for indoor growers, whether experts or beginners, who want total control over nutrient input. Its unique formulation ensures excellent root aeration and perfect drainage, essential conditions for preventing diseases and promoting rapid, robust growth.
Why choose Biobizz Light-Mix for your LED grow?
Our experts at BloomLED, with over 10 years of experience in horticultural lighting, recommend this substrate for several key reasons:
- Total control over fertilization: Being "lightly fertilized" (not pre-fertilized), Light-Mix allows you to precisely adapt nutrients to the specific needs of your plants, thus avoiding stress related to over-fertilization, which is particularly crucial for young shoots.
- Ideal for seedlings and cuttings: Its fine and aerated texture promotes rapid and healthy rooting, giving young plants the best possible start under the intense light and full spectrum of our horticultural LED lamps.
- pH balanced: Light-Mix is pH balanced, which guarantees optimal nutrient absorption by your plants' roots. A stable pH is fundamental for fertilizer efficiency and overall plant health.
- Excellent aeration and drainage: The specific composition of this soil ensures an oxygen-rich root environment and prevents waterlogging, essential factors for vigorous growth and dense root development.
The 20-liter bag is a practical format for starting multiple crops or for growers with limited space. Pair it with our BloomLED horticultural LED lights for an efficient and energy-saving indoor growing system. Designed in France, BloomLED is committed to providing you with the best equipment for your passion.
| Feature | Detail |
|---|---|
| Volume | 20 Liters |
| Brand | Biobizz |
| Substrate Type | Light-Mix (lightly fertilized) |
| Recommended Use | Seedlings, cuttings, initial growth |
| Compatibility | Indoor growing under horticultural LED lamps |
| Composition | Peat, perlite, vegetable fibers |
🌱 Optimal Start
A light, non-pre-fertilized substrate, perfect for seedlings and cuttings, ensuring precise control of essential nutrients.
🌬️ Superior Aeration
Its unique composition ensures excellent air circulation to the roots, preventing asphyxiation and promoting robust growth.
💡 LED Synergy
Ideally suited for growing under horticultural LED lamps, it allows maximum absorption of the benefits of the light spectrum.
Light-Mix is particularly suitable for the seedling, cutting, and early growth phases. For more advanced growth and flowering phases, it is recommended to add appropriate nutrients or transplant into a more enriched substrate like Biobizz All-Mix, if you prefer less fertilizer management. Its advantage is giving you total control over your plants' nutrition.
What is the difference between Light-Mix and other Biobizz soils?The main difference lies in the nutrient content. Light-Mix is "lightly fertilized" (not pre-fertilized), giving you total control over nutrient input from the start. All-Mix, on the other hand, is a heavily pre-fertilized substrate designed to cover plants' needs for several weeks. Light-Mix is ideal for growers who prefer to manage their fertilization program from A to Z, especially for sensitive plants or young shoots.
The Light-Mix 20L Biobizz Soil is the number one choice for demanding indoor growers for a perfect start to their crops under horticultural LED. Unparalleled control for exceptional results!
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100 L of Biobizz substrate to start any indoor grow — Five 20 L bags of Light-Mix, steam-pasteurised at 180 °C: premium drainage, low pre-feed and the organic potting soil of choice for seedlings, cuttings and young plants under LED.
Selected by BloomLED, growshop expert in LED horticultural lighting, designed in France and trusted by indoor growers for over 10 years.
5 × 20 L · 100 L total · Steam-pasteurised 180 °C · Low pre-feed · Organic & drip-compatible