Exhaust fan,can I turn it off?


#1

Hubby wanted me to ask if during the girls night time with two fans inside and a duct fan on bottom pulling air in do we need exhaust on,?


#2

Mine is set to the timer to turn off when the light does. But that’s me.:alien:
You should be ok if you have desktop fans in the tent.


#3

Please post pic of plant to be safe…lol :laughing::wink::smile:


#4

I guess it would depend on the temperatures with the fans off if it’s within range I see no harm depending on if it’s flowering to and you’re using a carbon filter or not but you should be fine as long as your temperatures are within range


#5

Might’ve been running for almost a year I don’t shut them off but I have to keep them running for my temperatures to stay where they need to be Hope that helps happy growing :sunglasses:


#6

thanks so much. I as well wish for the same maybe 2019. Yikes


#7

Since I’m in SW USA you’re absolutely right. Wasn’t thinking exhaust did much during sleep, but as temp are already 90+ here, think I’ll keep it on.


#8

@Laurap @Hogmaster… I have had no issues w/ temps, during the day I leave my tent open with fans inside blowing, but when I close it at night, I put on my exhaust at half because the RH goes up… Lately at night when lights go off and tent is zipped, temps drop and RH goes up!


#9

Humidity will rise also with the exhaust fan off, mine goes to high 80s at lights out, very annoying, just something to keep in mind.


#10

I always keep my exhaust fan on, and my intake, just to keep fresh air moving in and out… And I have also read here about negative pressure, I will have to find it, but a few people have said negative pressure in the tent is good for the plants (negative pressure = more out take than intake), something you may want to look in to or read up on…


#11

@McLovin777, I hear ya… Same here… Seems like there is an inverse relation to temp and RH…where I am at least… Temps go lower and the RH seems to go up


#12

Soo true! Can’t wait to get this chill nute stuff so I can use all lights on max, the humidity should drop and plants flourish at 84 - 85 F


#13

@McLovin777, what product are you talking about?.. New nutrient product?


#14

Loads of brands do it, Google vitalink chill, amazing stuff from the sounds of things… helps plants not only cope with above 83 F but actually thrive! Sounds too good to be true… all the brands I’ve seen have the same description


#15

@McLovin777… I’m in soil, that’s for reservoirs, hydro?


#16

Hmm… I’m sure you can get one for soil, look around dude, theirs no way they would leave such a huge market untouched


#17

@McLovin777, just looked it up, cool product… It’s for hydro and soil… Cool tip thx


#18

Was re-reading my replies & you said if I use a carbon filter or not. I do, bit what exactly do they do except cut out smell?


#19

I have mine on a separate timer, I have it on whenever the light is on and then I have it turn off 30 min then back on for 30 min and so on until the light comes back on. I like to circulate the air so my humidity doesn’t get jacked up at nighttime. My tents humidity spikes up when the lights are off.


#20

Mine does the same thing. I don’t mind during Veg but during flower, not so much.