Increased CO2 v's Increased Humidty
- Thread starter Cissy
- Start date
SM4RT3
Active Member
Hey Cissy, don't know if u saw it but there a thread on home made Co2 https://www.rollitup.org/general-marijuana-growing/258474-homemade-co2-guide.html, they might be able to help you.
Peace
Peace
Coolvibes
Well-Known Member
yes mate i done a test batch with bicarbonate of soda and orange juice check my grow diary for results I used orange juice as the chemical reaction was slower as its less acidic so you could change it every 40 hours or so I used 200ml of pure orange juice and 5 grams of bicarbonate soda commonly known as baking powder. The plant I became the biggest in the grow room so I switched to a larger batch until I can afford co2 sprayers they are used in gas guns and can be used in growing hope this helps
TheOldRat
Member
mini dehumidifier?
portable ac unit?
check water temps?
fans are good yes with at least one fan for circulation on low 24/7
a light with a reflector that has a air duct for venting are great for keping temps down
I have heard CO2 will raise temps too I have yet to test it.
Is outdoor humidity getting in?
What is your Watering method?
What is your CO2 dosing method?
What is your Room size?
What is your Lighting?
What is your Ventilation?
What is your Crop strain?
all theses will affect humidity
portable ac unit?
check water temps?
fans are good yes with at least one fan for circulation on low 24/7
a light with a reflector that has a air duct for venting are great for keping temps down
I have heard CO2 will raise temps too I have yet to test it.
Is outdoor humidity getting in?
What is your Watering method?
What is your CO2 dosing method?
What is your Room size?
What is your Lighting?
What is your Ventilation?
What is your Crop strain?
all theses will affect humidity
Cissy
Active Member
- It's cold outside. So no need for an A/C.
- DWC. Water temp is at a near constant 65 degrees F.
- I have 3 fans in the room, all running on low, but circulating the air just fine.
- The humidity here is extremely low (desert climate).
- CO2 right now is a bunch of 2 liters full of sugar and yeast, so the CO2 I have in there is precious and not to be wasted/sucked out...but in the future if I were to upgrade to a burner, I would still have this problem.
- Room is 12x12x9.
- Plenty of light. And they are vented, but since I need the heat in the room, the venting fan is not on.
- Plenty of ventilation when the fan is on, otherwise the room is sealed fairly well. So when it is off, there is virtually no fresh air being pulled in.
- White Berry, NL #9, Super Skunk.
So right now I have a limited amount of CO2. I tested it at 700-900 PPM. Not perfect, but better than nothing. I thought it best to just leave the fan off and not vent the room, in order to keep that precious CO2 in there. But that is causing high humidity, so therein lies the dilemma.
How do I balance the two?
ty
Cissy
Active Member
Guess I should have mentioned in the original post that I am already using this method. 12 of them to be exact. They last about 3 days and then I have to redo them. They don't raise the level up to the optimal levels, but they are better than nothing.
Orange juice and baking powder will produce CO2? Same method as the yeast and sugar? Would you say one works better than the other?
ty
cazador
Active Member
The plants and lack of ventilation is the cause of your excess humidity. A 40pint or larger dehumidifier would be the way to go. about 400-600watts to run. It gives off a little bit of heat but not to bad. Set it for 50% and leave it on. It works best if you can plumb it to a drain (or larger res.) as it collects quite a bit of water every day.
hope it helps.
cazador
Active Member
The cause of condensation is the temperature differential between the two areas and the relative humidity of the room. If you can decrease the rate at which the air cools at the window it will help stop the condensation. Try to install one of those "clear window weather film" to the area before the window. You heat it to stretch it clear and tight. Anyway you can insulate the are before the window will help. Obviously dropping humidity also will help too.
Cissy
Active Member
OK solid advice.. Get a dehumidifier. Will do. Problem is, I can't get one just yet. Maybe.. Hopefully next time
So in the meantime, the ambient air outside my grow room is really low (desert climate), so pulling some of that in drops the humidity in my grow room FAST. So wondering if I could cycle the fan on and off or maybe let it run throughout the dark cycle? Obviously with my using just sugar and yeast, it is tough to accumulate much CO2 in the relatively large room.. So trying to find a balance here. Seems to me that the CO2 would take a long time to build up with this method, but just a minute or two of the fan being on would quickly suck it all out. Am I missing something here or am I correct in that assessment?
Humidity hovers right around 60% at all times, when the ventilation is kept off. but drops down to nearly 30% within moments of turning the vent fan on.
So in the meantime, the ambient air outside my grow room is really low (desert climate), so pulling some of that in drops the humidity in my grow room FAST. So wondering if I could cycle the fan on and off or maybe let it run throughout the dark cycle? Obviously with my using just sugar and yeast, it is tough to accumulate much CO2 in the relatively large room.. So trying to find a balance here. Seems to me that the CO2 would take a long time to build up with this method, but just a minute or two of the fan being on would quickly suck it all out. Am I missing something here or am I correct in that assessment?
Humidity hovers right around 60% at all times, when the ventilation is kept off. but drops down to nearly 30% within moments of turning the vent fan on.
ta cazador, helpfull stuff i alrady have 2 de-humidifyers runing. rely cold owtside at the moment when the wheather warms up will the condensation not be as bad ? also could you advice me on topping my plants is it a great idea or not (have done it before but it scares me lol) ? sory about all the questions people.
cazador
Active Member
If you can keep the levels at 60%, while not ideal, if you have good air circulation going you should be able to get by just fine.
Yes you are correct. It is a slow way to produce CO2 and it will be evacuated quickly if you run the exhaust fan. The only way I see handling the humidity in a closed room is by using a dehumidifier/AC or exhausting the humid air (and that's not a closed room).
cazador
Active Member
The condensation should stop as the opposing surfaces become closer in temperature and or the humidity levels drop. If you can insulate the cold surfaces they should stop sweating.
Topping all depends on what you are trying to achieve. I see no problem with most training approaches. So if you want to top your plant, go for it. Make sure you have some plant nodes below the part you top obviously.
