• Growbro CO2 Bottle 1.8 kg | Indoor Grow CO2 | BloomLED
  • Growbro CO2 Bottle 1.8 kg | Indoor Grow CO2 | BloomLED
  • Growbro CO2 Bottle 1.8 kg | Indoor Grow CO2 | BloomLED
  • Growbro CO2 Bottle 1.8 kg | Indoor Grow CO2 | BloomLED
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Growbro CO2 Bottle 1.8 kg | Indoor Grow CO2 | BloomLED
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Réf 600558

Growbro CO2 Bottle 1.8 kg — CO2 Enrichment for Indoor Growing

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Prix : €49.20 Tax included
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Phase d'utilisationToutes phases
Type de cultureIndoor
TypeBouteille CO2
Type de culture compatibleUniversel
CB PayPal Virement Alma 3/4/10x · paiement sécurisé

Points clés

  • Phase d'utilisation : Toutes phases
  • Type de culture : Indoor
  • Type : Bouteille CO2
  • Type de culture compatible : Universel
  • Capacité / Contenance (kg) : 1.8 kg
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CO2 ENRICHMENT · INDOOR GROWING

Growbro CO2 Bottle 1.8 kg: power-free carbon enrichment for your indoor grow

Carbon dioxide is the fuel of photosynthesis. Inside a sealed grow tent, plants strip the available CO2 within a few hours and levels fall well below the 400 ppm found in outdoor air. Growth stalls — even under a perfectly specified horticultural LED. The Growbro CO2 Bottle 1.8 kg, supplied by BloomLED, removes that bottleneck. It releases pure compressed CO2 passively and gradually, with no mains connection, no controller and no daily maintenance, holding an enriched atmosphere of 1000-1500 ppm in spaces of up to 4 m³.

Growbro 1.8 kg CO2 bottle for carbon dioxide enrichment in an indoor grow tent

Key figures at a glance

1.8 kgCapacity
4 m³Volume covered
1500 ppmTarget CO2
0 WPower draw
100 %Passive release

Technical specifications

SpecificationValue
BrandGrowbro
System typeCompressed CO2 bottle
CO2 sourcePure compressed CO2
Capacity1.8 kg
Grow volume coveredUp to 4 m³
Target concentration1000 to 1500 ppm
Release ratePassive and gradual
Power supplyNone — 0 W
Built-in controllerNo (external controller compatible)
RefillableYes — reusable bottle
Growth stagesVegetative and flowering
Grow typeIndoor — universal
ShippingDangerous goods (ADR)
BloomLED reference600558

Why choose this CO2 bottle

🌱 Genuinely faster photosynthesis

Lifting your grow space from 400 ppm to 1000-1500 ppm removes the main limiting factor in a well-lit indoor grow. Plants fix more carbon per unit of light received, which translates into more vigorous growth, tighter internodes and denser flowering. The higher the PPFD your LED grow light delivers, the more dramatic the effect: without supplementary CO2, a large share of that PAR is simply wasted.

⚡ No electricity, no wiring

Unlike combustion generators or solenoid-driven systems, this bottle works by passive diffusion. No socket, no transformer, no extra load on a power strip already carrying your light, extraction fan and circulation fan. It simply sits in the tent and works continuously, which makes it ideal for small spaces and discreet setups.

🎯 Gradual, controlled dosing

Release is slow and steady, avoiding concentration spikes that are hazardous for the operator and useless to the plant. You get a stable atmosphere rather than a series of bursts — precisely the regime plants need across the whole lit period. Position the bottle high up: CO2 is heavier than air and will settle naturally over the canopy.

🔄 A refillable bottle, not a disposable consumable

The Growbro 1.8 kg bottle is built to be refilled and reused cycle after cycle. Across two or three harvests the cost per gram of CO2 drops well below that of single-use sachets or cartridges, and you cut the waste your grow generates.

🛡 Built for repeated, safe use

Metal body, protected valve and controlled pressure: the bottle is designed for repeated use in warm, humid environments. It is classified as dangerous goods for transport, which means regulated shipping, but in-tent use stays straightforward as long as you ventilate the space while working inside it.

How to integrate it into your grow space

Hang or stand the bottle in the upper third of the tent, above the canopy — never at floor level. Diffused CO2 falls under gravity and settles around the leaves, exactly where gas exchange takes place. Enrich during the lit period only: at night plants do not photosynthesise and the CO2 would be wasted. Reduce extraction slightly during enrichment hours, or run your extractor from a thermostat, so you are not venting the CO2 as fast as it is released. Finally, carbon enrichment only pays off when the other parameters keep up: 26-30 °C, humidity matched to the growth stage and an adapted feeding schedule are all required to turn that extra carbon into biomass.

Under a high-output horticultural LED, CO2 quickly becomes the first limiting factor. This Growbro 1.8 kg bottle is the simplest and cheapest way to lift that ceiling — without adding a single watt to your power bill.

Frequently asked questions

Why enrich CO2 in an indoor grow?

In a closed space, plants exhaust the available CO2 within hours. Levels can drop below 250 ppm, throttling photosynthesis even when light, water and nutrients are optimal. Enrichment restores and then exceeds atmospheric levels, letting the plant fully exploit the PPFD your horticultural LED delivers.

What volume does a 1.8 kg bottle cover?

It is sized for spaces up to 4 m³, which typically means a 120 x 120 x 200 cm tent or two 80 x 80 cm tents. Beyond that, run multiple units or move to a controller-regulated system. How long one charge lasts depends directly on the volume treated and on the air-exchange rate of your setup.

Do I need a controller or a solenoid valve?

No. The system is passive and works with no additional equipment, which is its main advantage for beginners and compact setups. If you later want fine control over concentration, the bottle can be integrated into an external regulation loop with a CO2 probe, but that is in no way a prerequisite.

Is enrichment compatible with an extraction fan?

Yes, provided the two are coordinated. A fan running flat out around the clock will vent CO2 as fast as it is released. Drive extraction from a thermostat or a fan speed controller so it responds to temperature rather than running permanently: you keep the benefit of enrichment while still managing the heat your lighting produces.

✓ BloomLED selection✓ 10+ years of expertise✓ Technical advice available✓ Tracked shipping

Goes well with

Airbomz MAXI PLUS CO2 Refill 60g — 4× Concentrated for Indoor DiffuserCornWall Electronics Reversible Thermostat Socket 220VClamp Fan
Fiche technique — Growbro CO2 Bottle 1.8 kg — CO2 Enrichment for Indoor Growing
Phase d'utilisationToutes phases
Type de cultureIndoor
MarqueGrowbro
TypeBouteille CO2
Type de culture compatibleUniversel
Capacité / Contenance (kg)1.8 kg
Durée d'action estiméeRechargeable / Illimité
Conditionnement (L)1,8 kg
Capacité (kg)1.8
Type de système CO2Bouteille CO2 comprimé
Combustible / Source CO2CO2 pur comprimé
Automatisation / ContrôlePassif (sans électricité)
Contrôleur intégréNon
SécuritéOui
Concentration cible CO2 (ppm)1000 - 1500 ppm
Restrictions transportMatière dangereuse
Débit CO2 (g/h)Passif / progressif
600558

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