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Back to Grow Questions
ExHale CO2 Grow Bags
NorCalAlien
started grow question 4y ago
Anyone had any experience using these CO2 bags? Wondering how many would be necessary to adequately fill a 5' x 3' x 2' grow space.
Open
Setup. Ventilation
likes
Answer
Roberts
answered grow question 4y ago
One will work. Minimum air exchange with outside of tent if not in a sealed room to get any benefits
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Complain
Organoman
answered grow question 4y ago
Unless you are growing in a closed/sealed system, CO2 bags are largely a waste of money, as your fans will remove any CO2 before it has any chance of being of any benefit to your plants.
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Complain
Similar Grow Questions
Solved
Melacola
Humidité
Humidité varie pas mal et j ai investi humidificateur mais sa ne résout pas le souci ventilateur 2 et deux entrés passive mais je pense trop de plans et je suis dans un endroit sous sol merci bien à vous l humidité n est pas bonne pour la floraison
Week 8
Setup. Ventilation
2y ago
4
5
Solved
spelly
Auf der Suche nach der richtigen Luft Einstellung
Equipement - Growtent 100*100*200= 2m³ - 2 Vents ca. 280m³/h (1 Zuluft, 1 Abluft) - 1 Cli-mate mini Humi 300W - Filter 125-400M³/H Die Panzen brauchen ca. 140 m³/h frische Luft und so müssen die Vets immer auf 50 - 60% in Betrieb sein richtig? Oder kann ich auch tiefer gehen?
Week 1
Setup. Ventilation
4y ago
2
Solved
Basementgrow05
Help! Drying ?!?
So I have my plants about too finish but not all so I have too find a space too dry them when I chop them down and what would be better trimmed hang dry for a day or 2 and then push them in jars but boveda packs or is 71 61 too high F & RH
Week 10
Setup. Ventilation
5y ago
1
7
Solved
VeggieTales
Help cooling grow tent 4x4
Please experienced growers I need advice. I’m runnning a 4x4 grow tent and the temp is constantly 84-87 degrees. How do I lower temp. I have a 190cfm exhaust and 100cfm intake, 2 fans, and a humidifier. Im growing exhausted and frustrated trying to get the temp down.😅please help
Setup. Ventilation
Setup. Other
5y ago
3
5
Solved
Andreskaja
I'm still worried because the temperatures still haven't dropped this afternoon, it rose to 33 degrees and I tried, as you see in the videos, putting two fans or one big one and nothing. Do you recommend turning on the light at night in the morning and how would it be to change t
Other. Other
Plant. Other
Setup. Ventilation
3y ago
2
2
Solved
masdefs33
Tried mini dehumid. still issues with portable ac (added @ 9pm 6/2) see pic for graph
Avg RH was 45%,had spikes @ 80% RH in dark, added portable ac to my tent. It raised avg. RH not lowered. Intake @ 40% RH that runs on a humidity cont. set @45%Now Day RH ~52%, Night RH ~60%.Ac starts RH spikes to 70% in dark. WTF am I doing wrong. Id hate to lose it to mold.
Other. General questions
Setup. Ventilation
3y ago
5
Solved
MontyGrowz
Why is my RH so high?
Inline Fan: S&P TD-350/125 Silent (in use) AC Infinity CLOUDLINE T6 (not in use, but testet) Filter: Can Lite Filter 300m³/h Transformator: SCNR5 (in use on setting 4/5) Tent: 2x4x6 ft, i get 70-80%+ RH inside My Room is at 45-50% RH with a temp of 60-70°F. Old Air gets outside.
Week 9
Other. General questions
Other. Other
Setup. Ventilation
3y ago
2
2
Solved
Luna91
Grow room too hot solution!!
Hi👋🏼 What is the best cooler ,AC or climate changer for a 1x1x2 tent with 2200w led (veg/bloom On)? I’m looking4 something that dehumidifies as well and changes the temperature from 32 to around 25C. Do you recommend sth that fits in with a convenient price?
Week 5
Setup. Ventilation
5y ago
2
2
Solved
Newbiegrower420
Grow tent Temperature
I have a 90cmx90cmx60cm grow tent with a VIPARSPECTRA 300W LED Grow Light inside.. How much will an extraction fan and carbon filter bring down the temp inside? In this heatwave my tent is running at 33 deg C, no plants seeded yet. Will the fan be enough or should I get a cooler?
Setup. Ventilation
5y ago
2
2
Solved
RFarm21
Grow fans
Hello. What brands of fans do you recommend? with quality and low noise. I know the Infinity ac but they don't sell it in Europe.
Setup. Ventilation
3y ago
2
3
Solved
BlueDreamer1
Humidity vs airflow? 8 day seedling.
Humidity VS airflow for 8 day old seedling, which is more important? My seedling is in a propagator with 60-65% humidity. Outside the propagator is at around 40%. I'm waiting on my humidifier. I'm going to raise it with a wet towel and containers of water. Should she be in tent?
Week 1
Setup. Ventilation
5y ago
3
1
Solved
Nzmk902
Help. Humidity too low
Any hacks to raise humidity in my grow tent?
Setup. Ventilation
5y ago
3
3
Solved
fuckitimhigh
Can an exhaust duct fan be too strong for a tent?
Can I use a fan with twice the capacity of what I need for the size of my tent?
Setup. Ventilation
4y ago
1
1
Solved
Showmethewaytogrowhome
Dehumidifier
I grow 4 x autos in my 1.2m x 1.2m tent. What size refrigeration dehumidifier do I need if I want to empty the tank every second day? 20l, 10l, 5l?
Setup. Ventilation
5y ago
1
1
Solved
Lazuli
Wilting plants of low humidity ?
Does anyone ever had wilting plants because of too low humidity? Every winter my plants wil during night while its still 20 degrees celcius
Setup. Ventilation
5y ago
1
1
Solved
TheColonel420
Mold and powdery mildew
Hi everyone. I have seen some of my friends suffer with mold issues in their grow tent. How can i keep mold out of my grow tent? Thanks My set up during this winter is to have the extraction fan off with a fan pulling in fresh air into the tent. P.s. i do not have any mold yet
Other. Mold
Setup. Ventilation
6y ago
2
2
Solved
420Highlifecouple
BEST Dehumidifier
Heys my fellow Green lovers QUICK QUESTION.Whats the best dehumidifier for value and quality???Having trouble with temp and humidity.
Other. Other
Setup. Ventilation
4y ago
1
1
Solved
STAYINGONMYMAINCBATORUNTWO
Heat
I’m thinking of putting a 12” fan up high to move the air to one space and an extractor to take out the air and a second cooler as I got up to 30c on a day of 15c so need some measures! Question is will it work? Don’t want to waste time on pointless things!
Week 2
Setup. Ventilation
6y ago
5
5
Solved
Nzmk902
Ventilation. For 2x2 help please, do i need a carbon filter set up? Please explain my best route.
Im currently waiting for a 2x2 grow tent & light... ive read i dont need a carbon filter For one plant.... if i have a fan in tp simulate wind and strengthen my plant.... would i need a fan of new air coming in? Or just leave the fan by the hatch to suck new air in Help please!!
Other. General questions
Other. Other
Setup. Ventilation
5y ago
3
4
Solved
CreamOfTheCrop
Fan vs Fanless LEDs
How effective are heatsink LEDs? I'm not sure if I should go with fanless (like Mars Hydro SP150) or with a fan (Mars Pro II Epistar 120). I struggle with heat, when the tent is closed it gets to 29-30 degrees with humidifier in full swing (HID lights) and I want to close it soon
Setup. Lighting
Setup. Ventilation
6y ago
3
3