Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Co2 howtoo
pebane
started grow question 4y ago
Hello how i can setup a co2 in my grow room ?
Open
Setup. Other
likes
Answer
Organoman
answered grow question 4y ago
Unless you are using a closed/sealed system, it is largely pointless, the CO2 will disappear long before your plants will benefit from it.
likes
Complain
Hempy_The_Kid
answered grow question 4y ago
Like mooncat said, you need a sealed room for it to work. I would also recommend reading as much as you can find on the subject before getting involved with it.
likes
Complain
Mooncat
answered grow question 4y ago
Unless you can seal your room its a waste of money and effort. You know since its a Gas...
likes
Complain
Similar Grow Questions
Solved
Seanh
So I'm thinking smaller pots next time ???
Week 3
Setup. Other
7y ago
5
5
Solved
BullWeedDog
Como controlar renovación del aire en índoor
Como controlar la renovación del aire en índoor, cada cuánto debo apagar y encender los extractores e infractores del cultivo, puedo dejarlos apagados en las noches mientras la bombilla está apagada??
Other. General questions
Setup. Ventilation
Setup. Other
4y ago
3
3
Solved
NetherHeaven
Grow Size help
Hello, I have a 40x40x160 grow tent. I am using 200W LED and I wanted to know if I can grow 2 cannabis plants with 2 separate 11 L pots? I can't estimate how much they will grow.
Other. Other
Plant. Spaces between nodes
Setup. Other
6y ago
4
3
Solved
TeesTrees
Growing sativa and indica in same room
So after finding out about the so called breeders of my seed. Im now wondering about growing different strains in the same area as i belive i have indica and sativa.( i thought I had all indica strains). They are all autos. Is it a problem or one that is negligible?
Plant. Other
Setup. Strain - Autoflowering
Setup. Other
4y ago
3
4
Solved
Ema26
Finally got the plant moved into the bigger tent. Now in a 1.2x1.2. What do you guys think? Could I position things better for better air flow? I will be getting a cool tube at some point. Any comments are appreciated! Thanks!
Setup. Other
6y ago
2
2
Solved
Simsim
Need your help for LED
Hi guys, i need your help 🙏 I have to upgrade my led, wich one is the best for a 2x2 (60cmx60cm) growtent ? So what do you think of : - Optic Led Phatslim 1Xl 104w x2 - Optic Led Gmax 150 x2 - Mars hydro FC3000 - SF Se3000 - Lumatek Attis 200 Thank youuu ! 🙏
Other. General questions
Setup. Lighting
Setup. Other
5y ago
2
2
Solved
BullWeedDog
Temperatura del armario 12ºC
La temperatura de mis plantas mientras está la bombilla encendida es de unos 20ºC pero una vez se apaga la bombilla baja hasta unos 12ºC esto podrá representar algún problema para las plantas?? hasta los momentos las veo bien!!
Other. General questions
Plant. Other
Setup. Other
4y ago
5
4
Solved
Joyfull420
Companion plants
What companion plants would you suggest??
Setup. Other
6y ago
3
3
Solved
DoomSmoker
2x2x4 yield expectations?
I want to use a 2x2x4 tent, growing (Gorilla Cookies) autos in Nature Living super soil mixed with Coco Loco. I want to yield just a few high quality ounces. Is this easily achievable with one 3 gallon pot under a SF-1000? Should I be concerned with any plant height issues?
Setup. Strain - Autoflowering
Setup. Lighting
Setup. Other
5y ago
2
4
Solved
carjos
2 plants one pot.
Please have a look at my diary "R.D. take ii", week 2. I have two babies growing side by side. What can I expect from this design? is there any transformation technique I might want to look at? thanks!
Other. Other
Setup. Other
Techniques. Other
5y ago
5
6
Solved
Hammerhead420
??How do you control the bucket temp??
My First DWC and was wondering what the easiest way to keep the bucket water cooler was, methods that anyone has had success with? My water is creeping up and I was wondering if the is anything I can do besides a chiller and $$$$$ of dollars. Thank you for you time!!!
Week 2
Other. General questions
Setup. Other
Techniques. Other
5y ago
1
1
Solved
Beedog
Grow help
Hi I need help I’m a beginner got 600 watt light 1.2 meter square space looking to grow auto plants stardog what soil I should use light schedule nutrients how many plant to yield the most any help would be much appreciate
Setup. Other
6y ago
2
6
Solved
BonjaMan
Last stets of harvest?
hello guys! So i got this method of a friend of mine, He told me i should do this the last few days of harvest so the plant thinks she is dying, so the trichomes start to work faster. I also wanted to Schock her with ice tommorow, over night, then harvest? What do yall think
Week 14
Buds. Other
Other. General questions
Setup. Other
6y ago
2
Solved
SchmeigalCakes
Co2 Diy
DIY CO2 Methods. The room is roughly 8x8x7 with 800w of led. AC infinity intake exhaust set to 75f 50%h. Would a 5gallon fermentation bucket provide enough co2 to be at all noticeable and anyone have experience with a compost bin setup in their space?
Setup. Other
5y ago
2
Solved
kette420
Optimal RH first week of veg
Should I increase RH to 65 or 70% for the first week of veg? Temp stays around 25°C.
Week 1
Setup. Other
5y ago
2
2
Solved
XiggYgreen
Where if possible to change which nutrients I use
Is it possible in this stage to input which nutrients I use.. Please help
Week 6
Setup. Other
3y ago
5
3
Solved
BunnyBud
Small grow box (60×52×104): LST + autos setup tips?
My grow box dimensions: 60 cm (W) × 52 cm (D) × 104 cm (H). I plan to grow 2–3 autoflowers with LST for maximum yield. How many plants would fit best, and what pot sizes would you recommend to fit and keep plants controlled in this space?
Setup. Other
1y ago
4
4
Solved
2x2growing
Coco and Sea of Green tips?
What brand of coco do you guys recommend and why? Starting my first coco and sea of green run. Thank you.
Setup. Other
5y ago
4
3
Solved
buddhi_coop
Training Plant
Would you guys suggest using these to ensure the plant stays upright ? I also have twist ties.
Other. General questions
Plant. Stem - Weak
Setup. Other
5y ago
4
4
Solved
SneakyDog
Dehumidifier
I’ve got a small tent 3x3 and MarsHydro T600. There’s no way I can have any filter system, pipes etc coming out of my tent. Can I use a dehumidifier to keep the humidity down in tent ? Currently at 27c but 80% humidity
Setup. Other
5y ago
2
4