Hi guys, Grow is going well plants are getting huge now (bigger than I anticipated) just about to go into the 4th week of flower. My issues are that i have a 6 inch rvk outlet fan, 2x 600w air cooled hps lights and a 4 inch inlet and my temps are rarely getting below 31-32 degrees with lights on and due to that the humidity is around 60-70% i having a dehumidifier on in the room but due to the plants size it appears to be hidden under the canopy and not really having much of an effect. Cheers for the advice in advance. You can see (just about) in the last pic the dehumidifier is hiding under the plants
Temps and humidity issues
- Thread starter Marcorfl
- Start date
You should put a few 9 inch fans on the floor pointing up through your canopy. Place the first one in the corner closest to your 4 inch intake, pointing it in a kitty-corner direction, (diagonally), towards the other side of your tent, and have it pointing upward at a 135 degree angle, so it blows up through the canopy, and it just needs to be on low. And then place the second fan, kitty-corner, (diagonally), from the first fan and have that one also pointing upward through the canopy at a 135 degree angle, and on low speed like the other one. And that for one, will push the hot humid air more uniformly up towards your outlet fan / carbon filter, and two, which is much more important, it will keep WPM and bud rot from finding a moist spot to begin its nastiness. Anyhow, if you just put those 2 fans on the floor as I said, even an environment that can't be well regulated and maintains as much as a 68% humidity, those 2 fans will stop WPM and but rot from ever becoming a problem. But those 2 fans will also greatly reduce the humidity in your grow tent, so if as you said you are now dealing with 60% - 70% humidity, those (2) fans should easily bring the humidity down to the 50% to 60% range! And as a side note, I run all my grows at 65% humidity from start to finish, and in 30+ years of growing indoors I have never had a mold or rot problem, and that's simply because I don't ever allow for any stagnant air zones to exist in my grow rooms!
Tetrahedral
Well-Known Member
Why is your temperature guage hung right under that HP's, that's not where they go.
I just put the probe by the top of the canopy? Where would you put it
Tetrahedral
Well-Known Member
Dont know but that close to a light just can't be right. Is there not many threads on the best place, seems like it would be a common topic.
bk78
Well-Known Member
Please tell us where they go master.
Moonmanyyc
Active Member
Here is my Blueberry Kush,Jack Herer and Gorilla Glue 21 days into flower. My forth grow but learned a hell of a lot in a year and a half. I will never grow in three weeks of summer as fighting heat sucks. I will veg clones till September but not gonna flower at all when it’s hot. Now the ladies are giving off humidity all night long but at least it’s cooling down at night. I’m concerned about humidity but I’ve learned that 2 x 4” fans in and one 6” out works just stellar. Cheers and happy growing.
