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

Sac de terreau Light-Mix 20L - Terre pour la culture en intérieur sous lampes horticoles LEDs - Biobizz
€19.80
€17.82 Save 10%
In stock - Express shipping available
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Sac de terreau Light-Mix 20L - Terre pour la culture en intérieur sous lampes horticoles LEDs - Biobizz
€19.80
€17.82 Save 10%
In stock - Express shipping available
Shipping within 24H

Sac de terreau Light-Mix 20L - Terre pour la culture en intérieur sous lampes horticoles LEDs - Biobizz
€19.80
€17.82 Save 10%
In stock - Express shipping available
Shipping within 24H

Sac de terreau Light-Mix 20L - Terre pour la culture en intérieur sous lampes horticoles LEDs - Biobizz
€19.80
€17.82 Save 10%
In stock - Express shipping available
Shipping within 24H

Sac de terreau Light-Mix 20L - Terre pour la culture en intérieur sous lampes horticoles LEDs - Biobizz
€19.80
€17.82 Save 10%
In stock - Express shipping available
Shipping within 24H
€99.00
€89.10 Save 10%
Tax included
Shipping within 24H
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In stock

Pack description

GROW SUBSTRATE PACK

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.

x5 bags Light-Mix Biobizz 20L pack for indoor LED growing — BloomLED
FeatureValue
BrandBiobizz
ModelLight-Mix 20L
Quantity5 × 20 L bags — 100 L total
CompositionLight organic substrate, blond peat, fibres, 180 °C steam pasteurisation
UseSeeding, cloning, young plants, early indoor growth
CompatibilityOrganic liquid nutrients, manual or automated drip irrigation
Weight≈ 6–7 kg / bag (≈ 34 kg total)
PackagingSealed Biobizz bags, shipped in a single ready-to-store parcel
100LTotal volume
x5Bags included
180°CSteam-pasteurised
100%Organic substrate

🌱 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.

Which growth phase is Light-Mix 20L recommended for?

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.

✓ Genuine Biobizz substrate ✓ 5-bag pack shipped together ✓ Selected by BloomLED ✓ Growshop expert 10+ years

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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

SOILS / GROWSHOP

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.

Light-Mix 20L Biobizz Soil Bag for indoor growing under LED

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
20LVolume
pHBalanced
0%Pre-fertilized

🌱 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.

Is Biobizz Light-Mix soil suitable for all growth phases?

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!

✓ BloomLED Expertise ✓ Biobizz Quality ✓ LED Recommended

Complete your growing equipment:

Pack x2 Light-Mix 20L Biobizz Pack x3 Light-Mix 20L Biobizz

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