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Biobizz Light-Mix 20L 4-Pack (80L) — Organic Soil for Indoor LED Growing
€79.20
€72.86
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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
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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.
| Specification | Value |
|---|---|
| Brand | Biobizz (Netherlands) |
| Pack format | 4 bags × 20L = 80 litres |
| Composition | Sphagnum peat, perlite, coco fibre, worm castings |
| Average EC | ≈ 1.2 mS/cm (light pre-fertilisation) |
| pH | 5.8 – 6.5 |
| Certification | RHP, 100% organic |
| Use | Germination, 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
TER-20L-LM-BIOBIZZ-X4
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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