Humidity Problems

Blackketch

Blackketch

Well-Known Member
Hi, I have a little moisture problem that is driving me nuts. Some time ago I had problems with bud rot in the densest buds and I tried to get around the problem by buying a good dehumidifier but it seems that as soon as I get to mid bloom it can't do much anymore... basically if I keep the grow box closed the humidity starts to rise dramatically and only twice has it reached 65% and then the rest of the time it stays between 50/57%. By now I've opened a crack where I put the dehumidifier in front and it's doing its job keeping everything between 38/47% but I'm afraid the damage could be already done... I have one that is super dense and the main top was practically stuck to the wall for a day while the humidity conditions were not quite right, I wasn't home, and so far I don't see anything except for a few pistils that died but seem to have resumed their normal growth but unfortunately I'm "burned" since one of my most beautiful tops inside was practically a single block of mold. I have 2 fans on the tops, one in the middle of the four plants pointing up and a large fan pointed at the wall moving air behind the last few plants. Thanks in advance guysIMG_20220122_171219.jpgIMG_20220125_101840.jpgIMG_20220125_114711.jpg
This is the top that touched the wall
 
Blackketch

Blackketch

Well-Known Member
GanjaJack said:
Fan is WAY to small....
Click to expand...
Eh brother I know but I burned three that were bigger and more importantly they swung.... I have like a graveyard of fans at home.
In fact I repeat that anyway I have 4 fans two on the tops, one huge one on the ground and another one between the plants in the middle pointing upwards
 
Blackketch

Blackketch

Well-Known Member
GanjaJack said:
Fan is WAY to small....
Click to expand...
@GanjaJack
Brother I remembered I have one of these at home, do you think it will improve the situation? It oscillates and has three powers but the only problem would be placement...I can put it either right away as soon as I open the box or right/left to the plants and it will move both below and above since it's tower shaped
I'll post a picture now so you can see where I can place them!
1= in front to plantsIMG_20220125_141854.jpg 2=right to plants 3=left to plants
-img-gallery-71307328-7364510365.jpg
 
GanjaJack

GanjaJack

Well-Known Member
That will be a BIG help.

You'll probably want to tie some of those big kolas off to the side some more so they are not getting burned by the light. They seem a little close in my opinion...

Take the big ones tie them off to the side, and the ones that are smaller behind them, tie them more towards the center. so that they are directly under the light a bit more. It will help them produce a bit larger kola when you go to harvest and they will put on a bit more weight, won't be as fluffy and airy.
 
Rurumo

Rurumo

Well-Known Member
What dehumidifier did you get? If you got one of those little ones that doesn't use compressors, they don't do much. You'll need at least a 22-35 pint dehumidifier to really get control of it. And also, as others said, you need much more air circulation. I use a lasko tower fan hung on it's side and pointed over the canopy and the circulation is killer, but you also need circulation under the canopy. I want to be able to see every single leaf twitching at least. In the future, another option is to grow more bud sites, which cuts down on cola size, so they won't be as prone to botrytis. I've had the exact same problem in the past and so far, those things have solved it for me. Treating your plants with a biological fungicide during veg also helps. Good luck!
 
Blackketch

Blackketch

Well-Known Member
GanjaJack said:
That will be a BIG help.

You'll probably want to tie some of those big kolas off to the side some more so they are not getting burned by the light. They seem a little close in my opinion...

Take the big ones tie them off to the side, and the ones that are smaller behind them, tie them more towards the center. so that they are directly under the light a bit more. It will help them produce a bit larger kola when you go to harvest and they will put on a bit more weight, won't be as fluffy and airy.
Click to expand...
Yes, unfortunately the only one in danger of being burned is the one on the left, which is clearly the highest peak and is 5cm closer than it should be... all the others are within the optimal range and do not risk burning, but you do not think I can do much because I can no longer move around the room because of the net. The tops were getting too heavy and one of my girls had even "fallen" and unfortunately I had to install the net that in addition to doing pretty much the job you just told me, I needed to support them. The lamp has reached its maximum height and the only thing I could do (you can't see it in perspective from the photo) is to move the tallest top away from under the light and I put it on the side! Unfortunately, that plant was under a lot of stress and struggled to grow until flowering and as soon as I switched it, it started to stretch like a beast.
 
Blackketch

Blackketch

Well-Known Member
Rurumo said:
What dehumidifier did you get? If you got one of those little ones that doesn't use compressors, they don't do much. You'll need at least a 22-35 pint dehumidifier to really get control of it. And also, as others said, you need much more air circulation. I use a lasko tower fan hung on it's side and pointed over the canopy and the circulation is killer, but you also need circulation under the canopy. I want to be able to see every single leaf twitching at least. In the future, another option is to grow more bud sites, which cuts down on cola size, so they won't be as prone to botrytis. I've had the exact same problem in the past and so far, those things have solved it for me. Treating your plants with a biological fungicide during veg also helps. Good luck!
Click to expand...
It is a good dehumidifier that cost me about 300€ like the ones with drying function for wet clothes. It has always worked well but since they came into bloom it doesn't do its job so well, I even tried taking it apart piece by piece but it wasn't even dirty inside. I used to keep it out of the grow box and it worked great but now to keep the 40/48% range I have to open one side of the grow box and put it in front.
As I mentioned before I just found a tower fan that I will be installing tonight and either raise it totally up or put it at plant height so it gets the down side as well.
Anyway I know, you're absolutely right but I had to do it this way for my own needs... I used to focus on the scrog but any minute now the landlady will call me to do some heavy work inside the house and the only solution I found was to focus on verticality instead of width because, besides the fact that it would be a mess to move diametrically huge plants, I couldn't fit them into the emergency closet I designed. Unfortunately I can only do this at the moment. Thank you so much I think I'll buy the fungicide now and save it for the next cycle.
 
Rurumo

Rurumo

Well-Known Member
Blackketch said:
It is a good dehumidifier that cost me about 300€ like the ones with drying function for wet clothes. It has always worked well but since they came into bloom it doesn't do its job so well, I even tried taking it apart piece by piece but it wasn't even dirty inside. I used to keep it out of the grow box and it worked great but now to keep the 40/48% range I have to open one side of the grow box and put it in front.
As I mentioned before I just found a tower fan that I will be installing tonight and either raise it totally up or put it at plant height so it gets the down side as well.
Anyway I know, you're absolutely right but I had to do it this way for my own needs... I used to focus on the scrog but any minute now the landlady will call me to do some heavy work inside the house and the only solution I found was to focus on verticality instead of width because, besides the fact that it would be a mess to move diametrically huge plants, I couldn't fit them into the emergency closet I designed. Unfortunately I can only do this at the moment. Thank you so much I think I'll buy the fungicide now and save it for the next cycle.
Click to expand...
That sucks about your dehumidifier, something must have gone wrong with it. These kinds of items just don't last as long as they used to. Check out Southern Ag Biological Fungicide, it's just bacillus amyloliquefaciens so it's won't harm your health in any way. It works great as a root drench too since it's a "plant growth promoting rhizobacteria."
 
Blackketch

Blackketch

Well-Known Member
Rurumo said:
That sucks about your dehumidifier, something must have gone wrong with it. These kinds of items just don't last as long as they used to. Check out Southern Ag Biological Fungicide, it's just bacillus amyloliquefaciens so it's won't harm your health in any way. It works great as a root drench too since it's a "plant growth promoting rhizobacteria."
Click to expand...
I bought it exactly one year ago and it seems to be totally gone already. I still have the warranty but I'm waiting for it to finish the cycle so at least it does that minimum... anyway now I see if I can get it shipped to Italy. Thanks again :bigjoint:
 
B

Bullmark

Well-Known Member
I also have a humidity issue but mine is too low…I have to run 3 different 1.5 gal humidifiers inside my grow room (which is only 2.5’ X 6’) just to get the rh up above 50%. One of my biggest issues is my exhaust fan. It’s a 6” Hurricane and really sucks the airflow in and out…mainly out. I’ve bought 2 different speed adjustments but neither slows it down enough to do the trick.
I’m currently in late flower so I’m trying to keep my rh lower, in the low 40s, to prevent bud rot and mold. I have a couple thoughts:
1. Maybe a stronger exhaust would move the air through your space quicker and alleviate the problem? A weaker one would work for me and your issue is the opposite…just sayin.
2. I messed around with placing the humidifiers just outside my intake and it didn’t result in much change. You may need to place the dehumidifier inside the tent to get the desired affect.
I have a small 5’x8’ vaulted safe in my basement. I use it to keep anything deemed too important to lose in a fire or burglary….Such as my very old shotgun collection. They are valuable and mean a lot to me. It’s suggested that I keep the humidity in that space at 40-45%…..which in the winter is no problem. But summers can be extremely humid where I live.
I run a small 3 liter dehumidifier inside the space and it does the job perfectly. Hardly runs in the winter but summers it stays on 80% of the time….during this time I have to empty the catch container daily.
i can almost promise that the unit inside the tent will pull your rh down as low as u need it.
I hope you can avoid any rot….those buds look great and deserve to be smoked. Good luck.
 
Blackketch

Blackketch

Well-Known Member
Bullmark said:
I also have a humidity issue but mine is too low…I have to run 3 different 1.5 gal humidifiers inside my grow room (which is only 2.5’ X 6’) just to get the rh up above 50%. One of my biggest issues is my exhaust fan. It’s a 6” Hurricane and really sucks the airflow in and out…mainly out. I’ve bought 2 different speed adjustments but neither slows it down enough to do the trick.
I’m currently in late flower so I’m trying to keep my rh lower, in the low 40s, to prevent bud rot and mold. I have a couple thoughts:
1. Maybe a stronger exhaust would move the air through your space quicker and alleviate the problem? A weaker one would work for me and your issue is the opposite…just sayin.
2. I messed around with placing the humidifiers just outside my intake and it didn’t result in much change. You may need to place the dehumidifier inside the tent to get the desired affect.
I have a small 5’x8’ vaulted safe in my basement. I use it to keep anything deemed too important to lose in a fire or burglary….Such as my very old shotgun collection. They are valuable and mean a lot to me. It’s suggested that I keep the humidity in that space at 40-45%…..which in the winter is no problem. But summers can be extremely humid where I live.
I run a small 3 liter dehumidifier inside the space and it does the job perfectly. Hardly runs in the winter but summers it stays on 80% of the time….during this time I have to empty the catch container daily.
i can almost promise that the unit inside the tent will pull your rh down as low as u need it.
I hope you can avoid any rot….those buds look great and deserve to be smoked. Good luck.
Click to expand...
Brother if you see above I posted a picture of a tower fan that I actually bought because it was an air cooler (they increase the humidity a lot but "cool" the room ... basically wasted money because it increases too much) and costs about 100 € and I think for your problem is perfect! Man, I wish I had those extractors.... I was going to get the ininity cloudline T6. However, my extractor is not the most modern on the market but still does its job well because as soon as I plug something even a little I start to have negative pressure that practically implodes the grow box. I have calculated everything meticulously during the choice of the setup and fuck ... every time a problem here, one there honestly I'm breaking my balls.... the dehumidifier I tried to put it inside but unfortunately these dehumidifiers are too big for these boxes and, even if in my house it's freezing cold, the temperature starts to rise dramatically and in addition to this the humidity seemed to rise again because the dehumidifiers need 30cm of free space behind, sides and front to work well and consider that I have so little space that I can not extract the tray with the accumulated water. Anyway, I no longer grow in the summer without an air conditioner... last year I got up to 37°C (NOT °F) and practically everything died..... Hottest summer in years. I thank you and take it as a compliment brother! If you feel like coming to Italy I'll host you and let you taste them with pleasure ahahahah :bigjoint:
 
Blackketch

Blackketch

Well-Known Member
Southernontariogrower said:
Try to exhaust tent at lights out, bring rh way down for sleep. Watch for pm if budrot is a problem alredy. Best of luck. Looking good!
Click to expand...
Consider that when you turn off the lights the humidity drops as low as 35%... the problem WAS when you turned on the lights it started to rise abruptly but fortunately by keeping one side open I solved it! I checked all the tops and they all seem to be doing well and I didn't find any pm anywhere thankfully! The only one was the one in the picture that unfortunately has been leaning against the wall for a day and I was afraid it was already lost but yesterday, after taking the picture, I juggled inside the box and I managed to get there (it looked like I was playing Twister or some spy movie) and looking at it closely it seems to have only a few dead pistils in the part that touched but it SEEMS all right... tonight I connect the microscope and check directly under the lens. And thanks brother :weed:
 
Blackketch

Blackketch

Well-Known Member
70's natureboy said:
A HEPA filter will catch a lot of mold spores. It seems to have helped my mold issues; still on first grow with it.
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Shouldn't all air purifiers have this in theory? If so, the new fan I installed should have it because it should be both an air purifier and an air cooler (one of those that you fill with water to refresh the air by increasing the humidity) Anyway, I'll look into it and I'll get a good air purifier at the next cycle.
 
M

Markshomegrown

Well-Known Member
The video link works.
I don't think this is a good place to have the fan, all the leaves close to the fan will get windburn, which will dry and damage the leaves, I would have hung the fan up high, on a mid setting aimed at the cola's, you want a constant light breeze over the canopy.
 
Blackketch

Blackketch

Well-Known Member
Markshomegrown said:
The video link works.
I don't think this is a good place to have the fan, all the leaves close to the fan will get windburn, which will dry and damage the leaves, I would have hung the fan up high, on a mid setting aimed at the cola's, you want a constant light breeze over the canopy.
Click to expand...
Hi Mark, I know in fact in the second video I show that it seems too violent the wind on those leaves but I do not have where to put it. that was the only place where it entered. So you are recommending that I raise it up more to not get those leaves and put it directly just pointed at the tops? I've been trying to put it in the middle to catch both under and over the netting as was recommended a few comments above. Other than that do you think it still manages to move air fairly evenly? In the first video you should see it! The speed is set to 2 out of 3 powers! I could set it to 1 but I think then it doesn't reach well enough to the last ones on the left. Thanks for the help
 
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