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CO2 levels in the air are measured in ppm (parts per million). Ambient air has about 300 PPM, but plants benefit the most when the CO2 is between 1,000 and 1,500 ppm.
CO2 monitors measure the amount of CO2 in the air so that this can be optimized. CO2 controllers are capable of maintaining the proper level of CO2 in your grow area by sensing the ppm of the ambient air, then turning your CO2 generator/regulator on and off as needed. Many monitors come with some form of logging and can even monitor relative humidity and temperature along with CO2.
- Brand
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- +Farm 3 item
- Across International 4 item
- Active Air 110 item
- Active Aqua 137 item
- Active Eye 7 item
- Adjust-A-Wing 11 item
- Advanced Nutrients 224 item
- Aerogarden 4 item
- Age Old Nutrients 30 item
- Agriair 7 item
- AgroBrite 6 item
- AgroFlex 5 item
- AgroLED 22 item
- Agrolux 2 item
- Agrosun 11 item
- Agrowtek 10 item
- Air Box 13 item
- Air Force 4 item
- Air King Fans 7 item
- AiroClean420 2 item
- Alchemist 6 item
- AllState Garden Supply 3 item
- Always Really Sharp 2 item
- Amazing Doctor Zymes 5 item
- AmHydro 4 item
- Anden / Aprilaire 32 item
- Apache Tech 7 item
- Aptus Plant Tech 35 item
- Aquafarm 1 item
- Arbico 87 item
- Arborjet 6 item
- Argee 1 item
- ARS 1 item
- Atami 17 item
- Athena 28 item
- Atmosphere 18 item
- Aura Systems 18 item
- Aurora Innovations 113 item
- Auto Cure 3 item
- Autopilot 56 item
- AutoPot USA 38 item
- AzaMax 4 item
- AzaSol 2 item
- Azomite 2 item
- B-Lite 2 item
- Ball 2 item
- BASF 3 item
- Batch:64 6 item
- Bayer 1 item
- Beaver Plastics 4 item
- Berry Plastics 3 item
- Bio Green Clean 3 item
- BioAg 10 item
- BioBizz 32 item
- BIOS Lighting 1 item
- BioSafe Systems 15 item
- BioWave 2 item
- Black Dog LED 20 item
- Black Gold 4 item
- Black Lightning 4 item
- Black Ops 11 item
- Blackstar LEDs 12 item
- Blauberg 5 item
- Bloom Brothers 3 item
- Bloom Yellow Bottle 94 item
- BloomBoss 9 item
- Bluelab 50 item
- Blueprint Digital Atmosphere Controllers 21 item
- BML Horticulture 7 item
- Bond Manufacturing 11 item
- Bonide 7 item
- Botanicare 211 item
- Boveda 14 item
- Bubble Magic 27 item
- Bud Builder 4 item
- Buried Treasure 2 item
- BVV 27 item
- C.A.P. 103 item
- Cambro 15 item
- Can Fans & Filters 92 item
- Canna 43 item
- Carson 1 item
- CatchmasterPro 1 item
- Caylx 1 item
- Central Coast 9 item
- CenturionPro Solutions 21 item
- Char Coir 7 item
- Chemtainer 20 item
- Chigo 4 item
- Chikamasa 24 item
- Cirrus LED Systems 8 item
- Claber 11 item
- Clean Light 3 item
- Clone Shipper 1 item
- California LightWorks 30 item
- Coaire 2 item
- Common Culture 74 item
- Containment Solutions 4 item
- Control Wizard Products 3 item
- Cool-Space 7 item
- Cultilene 10 item
- Curetube 2 item
- Current Culture 147 item
- Custom Automated Products 1 item
- Cutting Edge Solutions 49 item
- CVault 7 item
- CX Horticulture 29 item
- Cycloptics 5 item
- Cyco 57 item
- DAB Pumps 4 item
- DaKine 420 38 item
- Dayton Blowers 1 item
- Dayton fans 5 item
- Deep Water Innovations 10 item
- Digilume 4 item
- Digilux 9 item
- Dilution Solutions 20 item
- DimLux 18 item
- Dirt Pot 3 item
- DL Wholesale 169 item
- DNA Lighting 2 item
- Doktor Doom 4 item
- Dome Garden Supplies 7 item
- Dosatron 24 item
- Down To Earth 29 item
- Dr. Earth 8 item
- Dramm 5 item
- Dri-Eaz 24 item
- DryGair Energies 1 item
- DuraBreeze 7 item
- Duralastics 5 item
- Dutch Garden Supplies 2 item
- Dutch Lighting Innovations 1 item
- Dyna-gro 29 item
- Earth Juice 35 item
- Earths Friend 2 item
- Easy Grow Reflective Films 1 item
- EC Shake 1 item
- Eclipse 5 item
- Eco Green Industries 18 item
- Eco Grow Pots 2 item
- Eco-Nutrients 6 item
- Econo 11 item
- EcoPlus 124 item
- Ecostadt 5 item
- Eiko 1 item
- Einstein 2 item
- Element Air 3 item
- Elemental Solutions 3 item
- Elite 91 26 item
- Elite Nutrients 31 item
- Emerald Harvest 78 item
- Emerald Triangle 27 item
- Endomaxx 3 item
- Espoma 19 item
- Everything LED 1 item
- Excel Air 22 item
- Exhale 3 item
- Eye Hortilux 41 item
- EZ Stor 3 item
- EZ Trim 22 item
- EZ-Clone 21 item
- Fantech 5 item
- FastFit 16 item
- Feliz 8 item
- FF GreenHouses 8 item
- Fiskars 14 item
- Flo-N-Gro 16 item
- FloraFlex 66 item
- Fluence 165 item
- Flying Skull 6 item
- FoxFarm 76 item
- Frequency Water 4 item
- Fresca Sol 3 item
- FS Rolling Benches 1 item
- Fujitsu 8 item
- Fulham 3 item
- Funk Fighter 5 item
- Future Harvest Development 5 item
- Futurola 1 item
- Galaxy Electronic Ballasts 35 item
- Galcon 4 item
- Gardena 1 item
- Gardeneer 3 item
- Gavita 86 item
- GE 7 item
- General Hydroponics 174 item
- General Organics 43 item
- Genesis Lamps 1 item
- Geoflora 8 item
- Geohumus 1 item
- GeoPot 57 item
- Gnatrol 4 item
- Gold Label 62 item
- Gorilla Grow Tent 56 item
- Grasshopper Extractors 4 item
- Green Air Products 19 item
- Green Eagle Technologies 19 item
- Green Eye 3 item
- Green Gro 7 item
- Green Pad 3 item
- Green Reign 5 item
- GreenBroz 8 item
- GreenGro Biologicals 1 item
- Greenhaus Industries / Pipp Horticulture 1 item
- Greenspire Global 3 item
- Greentrees Hydroponics 6 item
- Greenwood 1 item
- Gro Pro 68 item
- Gro1 15 item
- Grodan 63 item
- Grosave 2 item
- Grotek 57 item
- Grove Bags 26 item
- Grow Crew 10 item
- Grow Logic 1 item
- Grow More Hydroponics 28 item
- Grow Solutions 7 item
- GROW!T 7 item
- GroWash 2 item
- Growee 1 item
- Growers Choice 78 item
- Growers Edge 58 item
- Growers House 28 item
- Growers House Essentials 10 item
- Growers House Package 400 item
- Growers Secret 1 item
- Growgles 4 item
- Growing Edge 5 item
- Growing Solutions Inc 1 item
- GrowLab 13 item
- GrowLite 25 item
- GrowoniX 40 item
- Growpito 1 item
- Growstone 10 item
- Growth Science 65 item
- H.D. Hudson Manufacturing 4 item
- Haight Solid State 3 item
- Hanna Instruments 41 item
- Harvest Keeper 4 item
- Harvest Master 8 item
- Harvest More 6 item
- Harvest Right 8 item
- Hawthorne Gardening Company 246 item
- Heavy 16 45 item
- Heavy Harvest 6 item
- Heliospectra 2 item
- Henkelman 5 item
- Hesi Nutrients 37 item
- Higrocorp 1 item
- Horticulture Lighting Group 31 item
- HM Digital 12 item
- Honey Bee 4 item
- Hormex 7 item
- Horti-Control 7 item
- HortiCare 8 item
- House & Garden 89 item
- Hudson 1 item
- Humboldt Nutrients 98 item
- Humboldt's Secret 1 item
- Hurricane Fans 38 item
- Hy-Yield Scientific 5 item
- Hydor 8 item
- Hydro Flow / Netafim 65 item
- Hydro Grow 7 item
- Hydro Innovations 13 item
- Hydrodynamics International 51 item
- Hydrofarm 388 item
- HydroHut 1 item
- HydroLogic 84 item
- Hydropods 5 item
- HydroRush 2 item
- Hydroton 2 item
- Hygrozyme [Sipco] 6 item
- Hyper Fan 7 item
- Hypotek 1 item
- IBC Tote 1 item
- Ideal H20 19 item
- Ideal-Air 117 item
- Illuminati International 1 item
- Illumitex 4 item
- Iluminar Lighting 43 item
- Inda-Gro 5 item
- Integra Boost 14 item
- Intelligent Growing Systems 26 item
- Interlux 1 item
- Intermatic 6 item
- International Enviroguard 2 item
- International Grower Supplies 4 item
- Jiffy 1 item
- Johnson Grow Lights 3 item
- Jump Start 24 item
- Jungle Rain 2 item
- KB Electronics 1 item
- Kessil 33 item
- Key to Life 77 item
- Kind LED 23 item
- Kind Roots 4 item
- Klasmann 3 item
- Kozy Kool 3 item
- La Crosse Technology 2 item
- Leader 19 item
- Left Coast 2 item
- Light House Tents 2 item
- Light Rail (Gualala Robotics) 18 item
- Lightite Films 2 item
- Link 4 iPonic 7 item
- Liquid Ladybug 1 item
- Little Giant 13 item
- Lotus Nutrients 16 item
- LTC 4 item
- Lucky Seven 2 item
- Lumatek 3 item
- LumiGrow 8 item
- Lush Lighting 5 item
- Lux Products 2 item
- Luxx Lighting 14 item
- Mad Farmer 5 item
- Mag Drive 19 item
- Magical Butter 1 item
- Malibu Compost 1 item
- Mammoth 6 item
- Mammoth Tents 17 item
- Marrone Bio Innovations 11 item
- Maxi-Jet 7 item
- Maxicrop 10 item
- Maxipot 1 item
- MaxLume 26 item
- Maxsea 8 item
- Mean Green Trimmers 10 item
- Measure Master 19 item
- Method Seven 21 item
- MGK 3 item
- Microbe Life 27 item
- Midwest 1 item
- Mills Nutrients 41 item
- Milwaukee 18 item
- Mirage 3 item
- Mitsubishi 7 item
- Mondi 19 item
- Monterey 6 item
- Mother Earth 6 item
- MotherPlant 4 item
- Motorleaf 4 item
- MovinCool 3 item
- MRCOOL 12 item
- Munch Machine 2 item
- Myron L 2 item
- Nanolux 35 item
- Natural Industries, Inc 1 item
- Nature Solutions 8 item
- Nature's Nectar 10 item
- NatureVac 16 item
- Nectar for the Gods 3 item
- NeoFarms 2 item
- Neptune's Harvest 1 item
- Netafim 347 item
- Netralizer by Synergy Ltd. 4 item
- NextLight LED 6 item
- Nora (IGS) 5 item
- Novozymes 1 item
- NPK Industries 43 item
- NutraDip 1 item
- Nutri+ Plus 99 item
- Nutriculture 5 item
- Nutrilife Plant Products 3 item
- Oakton 10 item
- Oasis 3 item
- Octa Bubbler 5 item
- Odor Sok 2 item
- OG Biowar 15 item
- OGS 1 item
- Olivia's 5 item
- Ona 21 item
- OneDeal 8 item
- Optic Foliar Nutrients 17 item
- Orca Film 3 item
- Orcon Live Insects 6 item
- Oregon's Only 61 item
- Organic Air 4 item
- Organic Bountea 1 item
- Organic Laboratories 3 item
- Organicare 9 item
- Organocide 2 item
- Original 420 Brand 2 item
- Orion 1 item
- OxyClone 3 item
- Oxygen Pot 8 item
- P3 International 1 item
- PAR Pro 1 item
- ParSource 10 item
- Payload 7 item
- PermaClone 3 item
- Phantom 50 item
- Phat Fan 4 item
- Phat Filter 53 item
- Philips 15 item
- PHOTOBIO 23 item
- Phresh Filters 69 item
- Physan 20 3 item
- Plant Doctor 1 item
- Plant House 7 item
- Plant Marvel 7 item
- Plant Science Concepts 13 item
- Plant Success 26 item
- Plant!t 4 item
- Planters Pride 6 item
- Plantmax 21 item
- Prism Lighting Science 49 item
- PollenMaster 28 item
- Pollinator 1 item
- Pond Boss 1 item
- Powder Feeding by Green House Seed Co. 34 item
- Power All 12 item
- Power Butane 6 item
- PowerSi 12 item
- Powerbox 30 item
- PowerFlow Hydro 9 item
- PowerPAR 2 item
- Precipitator 3 item
- Premier Horticulture 8 item
- Prepara 2 item
- Primordial Solutions 15 item
- Pro Pump 10 item
- Pro Source LEDs 7 item
- Prococo 3 item
- ProGrowTech 4 item
- ProGuard 2 item
- ProKure 13 item
- Prozap 1 item
- Pure Earth 4 item
- Pure Grow 2 item
- PurePressure 4 item
- PureCrop1 3 item
- PurGro Electronics 3 item
- Purpl Scientific 1 item
- Quantum 31 item
- Quest 42 item
- QuietCool 23 item
- R&M 12 item
- R.E.A.L 2 item
- R4 Aquaponic 1 item
- Radiant 8 item
- Raindrip 17 item
- Rainmaker 9 item
- Rainwater Hog 4 item
- Rambridge 7 item
- Rapid Rooter 3 item
- Rapitest 10 item
- Rasta Bob's 11 item
- Rare Dankness Nutrients 6 item
- RAW 5 item
- RediRoot 2 item
- Remo Nutrients 32 item
- Revelry Supply 26 item
- Revolution Microelectronics 2 item
- Rhizoflora 6 item
- RIOCOCO 5 item
- Robomist 3 item
- Rock Nutrients 15 item
- Root Guard 4 item
- Root Lowell 4 item
- Root Maker 18 item
- Root Pouch 5 item
- Root Spa 3 item
- Rooters 2 item
- Rose City Wholesale 2 item
- Rosin Industries 17 item
- Royal Gold 4 item
- RX Green Solutions 3 item
- Safer 17 item
- SaferGro 5 item
- Samsung 8 item
- Sasquash 12 item
- Schaefer 5 item
- Scissor Fix 1 item
- Scynce LED 14 item
- Seabright 5 item
- Secret Jardin 34 item
- Sensational Solutions 25 item
- Sentinel 48 item
- Serenade 3 item
- Sero Systems 11 item
- Shear Perfection 3 item
- Shoe Inn 11 item
- Siebring Manufacturing 6 item
- Sierra Natural Science 11 item
- Smart Pot 93 item
- SmartBee 14 item
- Smoke Buddy 1 item
- SolarMax 13 item
- SOLER & PALAU (S&P) 5 item
- Soleus Air 4 item
- Solis Tek 44 item
- Solo 1 item
- South Cascade Organics 7 item
- Spectralux 15 item
- SpectraPure 12 item
- Spectrum King LED 6 item
- Speedee Trim 14 item
- SpinPro 6 item
- Spray-N-Grow 3 item
- Springworks Farm 1 item
- Star Brite 4 item
- Stealth Grow 3 item
- Sticky Sensor Cards 1 item
- STM Canna 7 item
- SubCooled 4 item
- Summer Blues Optics 12 item
- Summit Chemical Company 2 item
- Sun Blaze 6 item
- Sun Blocker 6 item
- Sun Hut 16 item
- Sun Pulse 8 item
- Sun System 172 item
- SunBlaster Lighting 14 item
- Suncourt 12 item
- Sunfilm 5 item
- SunGrip 6 item
- Sunleaves 6 item
- Sunmaster 19 item
- Sunshine 15 item
- Sunshine Systems 2 item
- Super Sprouter 34 item
- SuperCloset 28 item
- Supernatural 27 item
- Superthriver 4 item
- Supreme Growers 18 item
- Sure To Grow 20 item
- Surna 2 item
- Sustainable Microfarms 1 item
- Sylvania 13 item
- Tank's Green Stuff 1 item
- Tarpline 2 item
- Technaflora 63 item
- TECO 12 item
- TerraHydro 6 item
- TerraVesco 1 item
- The Gardener's Hollow Leg 1 item
- The Green Sunshine Company 2 item
- The Guano Company 3 item
- Thermorock 1 item
- Thrive Agritech 3 item
- ThunderVak 2 item
- Tiresias 1 item
- Titan Controls 124 item
- TNB Naturals 5 item
- Tom's Tumbler 3 item
- Tomato Tent 2 item
- Total Grow Control 9 item
- TotalGrow 2 item
- Trifecta 8 item
- Trimbag 1 item
- Triminator 11 item
- Trimpal 2 item
- TrimPro 37 item
- TrolMaster 74 item
- Tropf Blumat 6 item
- True Liberty 23 item
- Truth Lighting 3 item
- TurboKlone 20 item
- Twisted Trimmers 3 item
- Twister 28 item
- Ultra Grow 1 item
- Ultra Sun Lamps 21 item
- Unibest International 1 item
- Unit Farm 3 item
- Universal Garden Supply 5 item
- UNO Horticulture Lighting 1 item
- Urban Flora 1 item
- Urban Gro 6 item
- Urban Oasis 6 item
- Ushio Lamps 15 item
- Uvonair 12 item
- ValuLine 5 item
- VapeTool 4 item
- Vapir 2 item
- VEG+BLOOM 38 item
- Vegamatrix 28 item
- Velcro 1 item
- Ventana Plant Sciences 4 item
- Venture Lighting 4 item
- Vermicrop Organics 13 item
- Vita-Grow 3 item
- Volcano 3 item
- Vortex Brewers 6 item
- Vortex Power Fan 21 item
- Vostermans Ventilation 12 item
- VRE Systems 4 item
- Whitmire 9 item
- Wiggle Worm 2 item
- Wingscapes 4 item
- Woodstream Corporation 6 item
- Worm Power 6 item
- X Nutrients 48 item
- Xtrasun 34 item
- Xtreme Gardening 18 item
- Zelda Horticulture 8 item
- Zenport Industries 13 item
- Zero Tolerance 6 item
- Zoom Technologies 1 item + See All
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