So I have a 4x4 grow tent. I have four plants in there. After watering I empty the trays but I still can’t keep the humidity down below 65%. It gets up to 70 sometimes. I have an intake fan pulling air from my dehumidified room and an exhaust fan exhausting the air outside. Both are AC Infinity inline fans and increasing the flow does not help. The room I’m pulling from is 50% RH. It seems after I water I just can’t keep the humidity down until the plants start to dry out. Any recommendations
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As long as the airflow is good, i wouldnt worry. I run 60 to 70 nearly all the time and have had no issues
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I had a similar humidity problem in my shed/grow room.
Another member suggested forcing my dehumidifier air into the tent. Here is what I did.
I can now maintain a rh < 60. Typically around 55-57%.
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I like it does it work well
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Pictures of the full tent? Defoliation of fan leaves can reduce transpiration and help manage humidity. Can depend on where you’re at in your grow, you don’t want to stunt the ladies.
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Alright, talked me into it. Easy enough to put together, let’s check it out! 
I was surprised how much air came out the other end…
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So you’re pumping warm dehumidified air into your tent? Not sure that’s a true fix is it? Sounds like you may need a larger dehumidifier?
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I dont think this is whats occuring here, i think the humidifier is drawing air from inside the tent and dehumidifying that. Less humid air is being brought in through whatever intake as humid air is removed. As long as the sensor that is monitoring the humidity does so as aor is drawn into the device, you should be able to just set whatever % youd like and it will kicl on when necessary. I worry that the sensor may not activate well with this set up due to the fact that the humid air would have to travel all the way through the tubing to switch device on, and im just not sure this will work well given the tubing (plus less humid air outside the tent will corrupt proper readings unless it is completely sealed around the tube and air intake areas of the dehumidifier). Not positive about any of this, just speculating given what is shown and what has been discussed.
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@ElBarno
Maybe the below will clarify what I’m doing
The dehumidifier draws in air through the back of the unit….air supplied from my lung room. The unit dehumidifies the air and expels the dehumidified air from the top.
The flex tubing is grabbing the dehumidified air and routing it in the bottom of the tent. The other bottom vent is open and the air is expelled from the tent via 6” exhaust fan.
Only a portion of the dehumidifier air goes in the tent. A portion is returned back in my lung room. The flex tube does not totally seal the top. Some air escapes.
My dehumidifier is a Govee brand and has a WiFi connection so I can set it, adjust it and monitor anywhere.
Yes, it raises the temp in the tent a little. I adjusted my exhaust fan slightly and it consistently maintains a 77-80 temp and a 57-60 rh
@StickyFrostyBuds
@Bubbala @Underthestairs @Greenegreens @ChittyChittyBangin
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Yep, that’s how it worked with me. I went back to just running it in the lung room, as it seems to keep a better system balance in my situation, but it was a fun experiment 
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Airflow is restricted by running fans in series.
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Let me rephrase that. I have an intake fan pulling air from my dehumidifier room and dumping it into my tent. I also have an exhaust fan that draws air out of my tent. I balance the air flow by adjusting the speed of my fans. It should just be an even air Exchange. No different than makeup air and exhaust air in any commercial building.
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