Having real problems with the humidity.

[memnoch]

I purchased a dehumidifier,

and my humidity is still in the 80s and 90s. It has rained here almost every day for two weeks and the humidity outside is crazy high. I'm at a loss as to what to do. I'm noticing wet spots on my leaves in the morning from all the humidity.

 

[NugetRocket]

No worries brother. It seems that it's perfect timing for a defoliation. Or pardon, obviously not the best of the best as you want to do major defoliation before flowering.

Anyways, if it would be my setup, i would defoliate most of the fan leaves, so that your buds gets more light and more importantly, you remove breathing biomass from the room, which is causing a decent chunk of the humidity.

More you cut, more you will get the humidity % lower. Note that this goes hand in hand with recover period as well, which probably takes about 1-5 days, depending of various of things. (I don't know your medium, watering schedule etc)


Anyways, do not be afraid of cutting a lot. Your babies look healthy and i am sure that they can take the stress.

Or, if you have room, buy crazy expensive dehumidifier which works more efficiently.

 

[NugetRocket]

Oh, and obviously the best solution is to get fresh air in the tent and fresh out, with powered inline duct fan. I am assuming that you have such setup(?).

 

[memnoch]

Yeah have inline fan video didn't show everything. I'm growing auto and defoliation is not the best for them but if I have to I will. I'm not having brown buds like my brother did. The vpd is what is bothering me the most. Having really slow growth because of it and these auto are on a timer.

 

[NugetRocket]

Yeah, it's not the most efficient method for this current moment, but it's better than powdery mildew or bud rot. Taking something like these, should decrese it for good 10% i would believe?

 

[Deadstill]

It doesn't look like that little room is sealed enough. I would get some good duct tape and seal off every crack and crevice, make that little room as air tight as possible.

They even sell these stick-on zippers for making a doorway in a tarp or plastic wall for doing construction jobs or make-shift grow tents. You just stick it on the tarp or plastic, pull the zipper down, then use a utility knife to cut the plastic behind the zipper and then you have a zipper doorway into your grow room. They sell them at Home Depot/Lowes and most grow stores.

That a/c and dehu should be more than enough for that small of a space you just have to be very diligent and get every edge and corner sealed off properly.

Edit to add - your plants look very healthy, though, and could probably benefit from a more powerful light if possible. I don't think VPD is so much of an issue here. I generally only worry about VPD in my CO2 supplemented grow rooms, this is when VPD is important.

If you are worried about the VPD, though, and getting the humidity down isn't working, you could always raise your temperatures to get it in that proper threshold.

 

[NugetRocket]

It doesn't look like that little room is sealed enough. I would get some good duct tape and seal off every crack and crevice, make that little room as air tight as possible.

They even sell these stick-on zippers for making a doorway in a tarp or plastic wall for doing construction jobs or make-shift grow tents. You just stick it on the tarp or plastic, pull the zipper down, then use a utility knife to cut the plastic behind the zipper and then you have a zipper doorway into your grow room. They sell them at Home Depot/Lowes and most grow stores.

That a/c and dehu should be more than enough for that small of a space you just have to be very diligent and get every edge and corner sealed off properly.

Edit to add - your plants look very healthy, though, and could probably benefit from a more powerful light if possible. I don't think VPD is so much of an issue here. I generally only worry about VPD in my CO2 supplemented grow rooms, this is when VPD is important.

If you are worried about the VPD, though, and getting the humidity down isn't working, you could always raise your temperatures to get it in that proper threshold.

This is the absolute winner solution.

 

[memnoch]

It doesn't look like that little room is sealed enough. I would get some good duct tape and seal off every crack and crevice, make that little room as air tight as possible.

They even sell these stick-on zippers for making a doorway in a tarp or plastic wall for doing construction jobs or make-shift grow tents. You just stick it on the tarp or plastic, pull the zipper down, then use a utility knife to cut the plastic behind the zipper and then you have a zipper doorway into your grow room. They sell them at Home Depot/Lowes and most grow stores.

That a/c and dehu should be more than enough for that small of a space you just have to be very diligent and get every edge and corner sealed off properly.

it's not there is two huge double doors that i cannot get sealed for the life of me. I'm going to take a pic of the outside of it so you can see what I'm talking about. Honestly doing any more work to this little space is really looking suspicious and worries me. I have a officer about 4 houses down from me and he makes me paranoid.

 

[Trash_2002]

I purchased a dehumidifier,
View attachment 2020590
and my humidity is still in the 80s and 90s. It has rained here almost every day for two weeks and the humidity outside is crazy high. I'm at a loss as to what to do. I'm noticing wet spots on my leaves in the morning from all the humidity.

How many liters per day is that dehumidifier rated for ?

 

[newcastle112]

Oh, and obviously the best solution is to get fresh air in the tent and fresh out, with powered inline duct fan. I am assuming that you have such setup(?).

sorry to pop in this chat just quick question should my cold air be going in at the top or bottom thanks

 

[memnoch]

sorry to pop in this chat just quick question should my cold air be going in at the top or bottom thanks

Bottom cold hot top

 

[NugetRocket]

sorry to pop in this chat just quick question should my cold air be going in at the top or bottom thanks

You can do it either way, depending of your setup. For in example you can suck air from the bottom and push it from the top or vice versa. Best way is to simply test it out.

Basically heat rises to the top and cold air goes down, but if you have strong inline fan, you can suck or push with it from any direction, to any direction.

 

[NugetRocket]

Now when i think about it more, it could be also beneficial to force "reverse" airflow temperature wise, as it would possibly mix the air more, and make it more stable temperature wise?

 

[Deadstill]

it's not there is two huge double doors that i cannot get sealed for the life of me. I'm going to take a pic of the outside of it so you can see what I'm talking about. Honestly doing any more work to this little space is really looking suspicious and worries me. I have a officer about 4 houses down from me and he makes me paranoid.

I would buy a tarp large enough to cover those doors and buy one of those zipper door things I was just talking about. Put the tarp on the inside of the doorway so when you open the doors you're looking at a tarp wall, with the zipper door. I would use staples to secure the tarp to the door frame and then duct tape the edges to make it air tight. Including the bottom part.

Edit to add - if the cop asks any questions this is your painting booth. You're into crafts and this is where you do your spray painting.

 

[memnoch]

How many liters per day is that dehumidifier rated for ?

I

I would buy a tarp large enough to cover those doors and buy one of those zipper door things I was just talking about. Put the tarp on the inside of the doorway so when you open the doors you're looking at a tarp wall, with the zipper door. I would use staples to secure the tarp to the door frame and then duct tape the edges to make it air tight. Including the bottom part.

i already have two tarps behind it now staple up to the frame. I don't have a zipper door though. just a small space to crawl through.

 

[newcastle112]

You can do it either way, depending of your setup. For in example you can suck air from the bottom and push it from the top or vice versa. Best way is to simply test it out.

Basically heat rises to the top and cold air goes down, but if you have strong inline fan, you can suck or push with it from any direction, to any direction.

yes as the man at the shop told me to do at the top i tried it, but I was making my room too hot for plants so i just left a hole at the bottom my set up with a fan next to it pushing in cold air with 6 inch out let pulling air out at the top

 

[memnoch]

How many liters per day is that dehumidifier rated for ?

i got it second hand and don't have much info on it. It's a Kenmore and holds 50pints. it's pretty dang big.

 

[newcastle112]

You can do it either way, depending of your setup. For in example you can suck air from the bottom and push it from the top or vice versa. Best way is to simply test it out.

Basically heat rises to the top and cold air goes down, but if you have strong inline fan, you can suck or push with it from any direction, to any direction.

so if it’s at the top pulling in air and would i have something pushing it out at the bottom and top

 

[Eclipted]

I’m with dead, gotta get that room sealed off. Can you purchase a tent and place the tent inside the grow space? At least seal one door off and only use the main door on the right? Place your ductape on the inside door to remove suspicion. Maybe place a really thick blanket behind the doors that you have to walk through to get to plants? It’s kinda hard to tell how the setup of the building is im just tossing ideas out there. Also do you have any fans on your plants? I couldn’t see any in the video. I also struggled with high humidity I had the blessing to be able to put my plants in a tent so it was a little easier to control but what dropped my humidity most was more ac, and more airflow. I have 2 fans in my tent and it’s only a 3x2x5 along w a dehu and in-line fans and I can only drop my humidity to 50%

 

[NugetRocket]

so if it’s at the top pulling in air and would i have something pushing it out at the bottom and top

It would be beneficial if you could push fresh air from the bottom and suck it out from the top for in example. However, pushing-pulling air from top-top or bottom-bottom works as well. Top-top is pretty classical solution as people don't always have room at the floor level.