How often does your exhaust fan run?

my issue is more that i have such a tiny tent and thus the airflow is quite strong through it, could this dehydrate or stress my girls when i put them in there to flower. It can maintain 80 degrees but its pretty strong flow with a 4" vortex sucking through a 20sq/ft tent for like an hr at a time now .

WattSaver said:

Look into "Can Fans" they cost a little more, but are worth it. At the end of June it will be 4 yrs straight for my 6" Hi Output room exhaust fan mounted to carbon filter. My intake & hood exhaust are Cans also. One thing that really help with the lifespan of an inline fan, is to filter the air before it goes through the fan.

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Awesome bro thanks for the heads up

24/7 with 100% fan speed and then turn fan to 50% on lights off.

purplehays1 said:

my issue is more that i have such a tiny tent and thus the airflow is quite strong through it, could this dehydrate or stress my girls when i put them in there to flower. It can maintain 80 degrees but its pretty strong flow with a 4" vortex sucking through a 20sq/ft tent for like an hr at a time now .

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fan speed controllers and cool air humidifiers could be your friend

fan speed controller for sure - around 10 usd

i have a speed controller, how do you have it set to use the speed controller sometimes and not others? or do u just manually switch it each time?

U saying to run the humidifier to compensate for too much airflow? Wouldn't the fan just suck the humidity right out with the heat?

24/7

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purplehays1 said:

i have a speed controller, how do you have it set to use the speed controller sometimes and not others? or do u just manually switch it each time?

U saying to run the humidifier to compensate for too much airflow? Wouldn't the fan just suck the humidity right out with the heat?

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i manually switch it to the setting i want on low and then at then sometime before lights on i switch it back to full.

purplehays1 said:

i have a speed controller, how do you have it set to use the speed controller sometimes and not others? or do u just manually switch it each time?

U saying to run the humidifier to compensate for too much airflow? Wouldn't the fan just suck the humidity right out with the heat?

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yes it will exhaust the humidity. but if your air intake is from inside the building you can put it out before the grow room near the air intake... i use grow tents so the humidifier is in the room. I'm not exhausting outside.. A/C, Filters, and Humidifiers enough to handle heat and smell.

24/7 but I'm growing in a tent and using computer fans, id recommend keeping an intake or exost fan going all the time plants need fresh air even if the lights are off.

Blindnslow said:

24/7 on all mine ..exhaust and circulating.

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24/7 on for me too, the exhaust is a filter for me and if that shuts off the whole neighborhood smells like skunks. I really don't want to bring my wife or I any trouble so I keep it on constantly.

yes it will exhaust the humidity. but if your air intake is from inside the building you can put it out before the grow room near the air intake... i use grow tents so the humidifier is in the room. I'm not exhausting outside.. A/C, Filters, and Humidifiers enough to handle heat and smell.

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Thanks man i plan to do basically the same thing.

I run mostly leds with some floros and a 420 inda-gro induction light I need to run all intake and exhaust fans 24/7 + circulation fans on medium or high 24/7 to keep my room between 80 and 84 degrees I water a litte more but my humidity stays between 30% and 60% and I've yet to replace any fans except circulation fans.

mine is on 24/7. if you keep yours off at night, make sure to keep a very close eye on the humidity, i had a whole crop ruined by bud rot from improper ventilation

24/7

24/7 here too. I learned my lesson with 12 hours on in the flower tent.

buy a vortex fan, they have 5 year warranty's, if it even gets loud u just sen it back and they fix or send u a new one in like a week.

inbound and exhaust inline fans on 24/7 as well, variable controllers on low setting, adjust the variable speed for incoming/cooler/drier air to adjust humidity and temps depending on the time of year. Other than that they're hands off. if you don't run them 24/7, watch your humidity levels during lights-off as typically humidity rises when your lights go off.

24/7 with thermostat so runs faster during the day or hot nights than it does during dark/colder. I use a Ruck 125L, german engineering, the rest are cheap knockoffs. I do have a much larger one for end flowering if it's humid weather.

Never had a fan/exhaust burn but I did read someone post $15 and walmart...

im not worried about blowing my fan, im worried about plant stress from strong negative pressure. I have solved this by adding an intake fan. I now have positive pressure so i have a speed controller coming to lower the intake fan hoping to create very slight negative pressure.