Humidity Issues

[JohnCee]

I've been waiting to flower due to bugs (removed) and the high and uncontrollable humidity. The last few days have been rough for the humidity, but the weather has been better today, but my basement is still stuck at 69% and I have been running the dehumidifier for the last 2 hours. I'm not a fan of the dehumidifier because it's extremely expensive to keep running. The last couple of days my humidity has even reached 85% in the basement. I want to flip the switch desperately, however I feel like the humidity will be an issue.. we're coming into the fall now and hopefully the humidity will not be an issue in a couple of weeks. Would I be safe to flip the switch now and pray the humidity straightens out within the coming weeks?

 

[Anon Emaus]

I'd say so, just assure that there's decent airflow. Think of it like it was outside, imagine tropical area, humidity is probably always around that with no issues. Outside does have wind though, so as said just keep air flow going. My humidity in June for my last 6 weeks of flower was 60-75% with not issues whatsoever.

 

[SPLFreak808]

I'd say so, just assure that there's decent airflow. Think of it like it was outside, imagine tropical area, humidity is probably always around that with no issues. Outside does have wind though, so as said just keep air flow going. My humidity in June for my last 6 weeks of flower was 60-75% with not issues whatsoever.

Bring in fresh air and keep that air swinging across the room, you should be fine. I flower in tight indoor box's. My humidity can range from a minimum of 65 to 85 with no issues. I flower at 80f though. As long as the air doesnt get a chance to sit stale in one spot with the lights off, you should be fine.

 

[Nullis]

Humidity becomes more of an issue as plants are blooming. You'll be fine as long as the humidity does go down in the next few weeks.

 

[JohnCee]

I'd say so, just assure that there's decent airflow. Think of it like it was outside, imagine tropical area, humidity is probably always around that with no issues. Outside does have wind though, so as said just keep air flow going. My humidity in June for my last 6 weeks of flower was 60-75% with not issues whatsoever.

Well, there really is no air intake for the basement.. I simply have a small 9" fan that was $10 running on the medium setting propped right up under the plant. A drop of water on the floor will stay there for well over a day before eventually disappearing. As we're going into fall and eventually winter.. I'm curious about how cold my basement is going to get.

Bring in fresh air and keep that air swinging across the room, you should be fine. I flower in tight indoor box's. My humidity can range from a minimum of 65 to 85 with no issues. I flower at 80f though. As long as the air doesnt get a chance to sit stale in one spot with the lights off, you should be fine.

Now that you mention stale air -- I often find some leaves on top that will be wet.. is this from high humidity by stale air? Out of curiosity, would you happen to know how much the temperature can fluctuate with cannabis? I've heard that most strains can take temperatures just above freezing and some even lower than freezing, but will too much of a temperature change over night be bad and what is the limit to look for?

 

[SPLFreak808]

Well, there really is no air intake for the basement.. I simply have a small 9" fan that was $10 running on the medium setting propped right up under the plant. A drop of water on the floor will stay there for well over a day before eventually disappearing. As we're going into fall and eventually winter.. I'm curious about how cold my basement is going to get.



Now that you mention stale air -- I often find some leaves on top that will be wet.. is this from high humidity by stale air? Out of curiosity, would you happen to know how much the temperature can fluctuate with cannabis? I've heard that most strains can take temperatures just above freezing and some even lower than freezing, but will too much of a temperature change over night be bad and what is the limit to look for?

Is the tops wet with the lights off? A fan blowing across the plants should prevent moisture off the tops. In the morning when the light kicks on,you might have a little condensation but it will dry really fast if you have air movement. When people say no issues at 80% rh, its because they have an adequate amount of air movement across the plants. What was your temps again? Im not that experienced with temps because 65f-75 is the coldest it ever will get where i live. 85-95 being the hottest during summer.

 

[JohnCee]

Is the tops wet with the lights off? A fan blowing across the plants should prevent moisture off the tops. In the morning when the light kicks on,you might have a little condensation but it will dry really fast if you have air movement. When people say no issues at 80% rh, its because they have an adequate amount of air movement across the plants. What was your temps again? Im not that experienced with temps because 65f-75 is the coldest it ever will get where i live. 85-95 being the hottest during summer.

I have not checked the top of the canopy when the lights are off -- that is something that I will have to do later tonight. I do not think that my fan is powerful enough because when my fan is angled up the plant I notice the lower leaves swaying quite hard, but on the top of the plant I don't even see movement. I will check on my girl late in the afternoon and find wet spots on top and under some leaves on the top layer. The temperatures have been ranging between 70-84 with 65-85% RH. I live pretty much as northern as you can get in the states so it gets pretty cold here in the winter.. hoping the basement doesn't get too cold. Let's say that my basement drops to 40-50 degrees.. think they would thrive in a colder environment like that? I do not have a clothes dryer and have the exhaust hose leading outside that I could push or pull air with, but I'm afraid about bringing in unwanted bugs and insects.. in addition to the colder temperatures.

 

[Dr. Who]

The STIG gets +rep! Damn, we don't have that anymore.......Ok STIG,,,pat on the back and a *like*....Nullis said the rest of the story..

I have not checked the top of the canopy when the lights are off -- that is something that I will have to do later tonight. I do not think that my fan is powerful enough because when my fan is angled up the plant I notice the lower leaves swaying quite hard, but on the top of the plant I don't even see movement. I will check on my girl late in the afternoon and find wet spots on top and under some leaves on the top layer. The temperatures have been ranging between 70-84 with 65-85% RH. I live pretty much as northern as you can get in the states so it gets pretty cold here in the winter.. hoping the basement doesn't get too cold. Let's say that my basement drops to 40-50 degrees.. think they would thrive in a colder environment like that? I do not have a clothes dryer and have the exhaust hose leading outside that I could push or pull air with, but I'm afraid about bringing in unwanted bugs and insects.. in addition to the colder temperatures.

40-50F for long sustained times,,,,,are not conductive to growing quality.

Put a piece of "pantyhose" over the intake to keep bugs out!

Doc

 

[texasjack]

you need to run your dehumidifier 24/7. That's the only way to pull the water out of the walls of your basement. Otherwise you're just pushing a stone uphill.