Biobizz Light-Mix 20L 4-Pack (80L) — Organic Soil for Indoor LED Growing

80 litres of Biobizz Light-Mix organic soil — A 4-bag pack ideal for germination, cuttings and vegetative growth under LED indoors.

Trust BloomLED: a French growshop, expert in indoor LED cultivation for 10+ years.

4 × 20L · RHP organic · EC ~1.2 · Indoor LED

Sac de terreau Light-Mix 20L - Terre pour la culture en intérieur sous lampes horticoles LEDs - Biobizz
€19.80
€18.22 Save 8%
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
€18.22 Save 8%
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
€18.22 Save 8%
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
€18.22 Save 8%
In stock - Express shipping available
Shipping within 24H
€79.20
€72.86 Save 8%
Tax included
Shipping within 24H
Quantity
In stock - Express shipping available

Pack description

ORGANIC INDOOR SUBSTRATE

Biobizz Light-Mix 20L 4-Pack: 80 litres of light organic soil for indoor LED cycles

This 4-bag pack of Biobizz Light-Mix gives you 80 litres of premium organic soil in a single order. Designed for growers who run multiple cycles or fill 120×120 grow tents and larger, this airy and lightly pre-fertilised substrate supports your young plants — from cuttings to vegetative phase — with vigorous root development and reliable drainage.

Biobizz Light-Mix 20L 4-pack organic soil indoor LED grow BloomLED
SpecificationValue
BrandBiobizz (Netherlands)
Pack format4 bags × 20L = 80 litres
CompositionSphagnum peat, perlite, coco fibre, worm castings
Average EC≈ 1.2 mS/cm (light pre-fertilisation)
pH5.8 – 6.5
CertificationRHP, 100% organic
UseGermination, cuttings, vegetative phase under LED
80LTotal volume
x4Bags shipped
100%Organic
RHPCertified

🌱 A light substrate built for healthy starts

Biobizz Light-Mix is only lightly pre-fertilised (about one week of nutrient reserve), which makes it perfect for germination, cuttings and early vegetative growth. Roots colonise quickly with no nutrient burn, and you stay in full control of your Bio·Grow and Bio·Bloom feeding schedule from week two onward.

💡 Tuned for indoor LED cultivation

The airy structure (perlite + coco fibre) ensures consistent drainage under horticultural LED lighting, where evapotranspiration is gentler than under HPS. Less hydric stress, better PPFD uptake, and plants that fully exploit every µmol of full-spectrum light reaching the canopy.

🌿 Bulk-friendly format for active growers

Buying four bags in one pack saves money compared to single units and reduces shipping. It is the ideal format for a 120×120 grow tent (two plants in 25L pots), a small SCROG setup, or several propagation and mother-plant cycles running in parallel.

📦 Organic, traceable, RHP-certified

Every component is 100% organic and certified by the RHP standard. You work with a substrate that contains no chemical fertiliser, fits a fully organic grow protocol, and is recognised by the entire European growshop industry.

How many 11 L pots can I fill with 80 L?

About 7 to 8 pots of 11 L, or 3 to 4 pots of 25 L. That comfortably covers a 120×120 grow tent or several smaller spaces dedicated to germination and mother plants.

Do I need to add nutrients from day one?

No. Light-Mix already contains a mild pre-fertilisation (around one week's worth). Start adding Biobizz Bio·Grow or any compatible organic fertiliser around day 8 to 10, adjusting doses to plant size and pot volume.

Is Light-Mix suitable for low-heat LED setups?

Yes, perfectly. Its airy structure prevents the over-retention of water often seen under LED, which evaporates less than HPS. You get a steadier water/oxygen cycle at root level and reduce the risk of damping-off in seedlings.

Hand-picked by BloomLED, a French growshop specialised in horticultural LED for 10+ years: Biobizz Light-Mix remains the reference among light organic soils to start any indoor cycle with confidence.

✓ Designed in France✓ 10+ years expert✓ Fast EU shipping✓ Growshop advice

Complete your setup

Biobizz Light-Mix 20L 2-PackBiobizz Light-Mix 20L 3-PackBiobizz Light-Mix 20L 5-Pack

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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