Best way to keep humidity down while constantly exhausting?

What's the best way to keep humidity down, or lower humidity, while constantly exhausting the air? Usually my humidity is around 50%, but at night when it's humid outside, my humidity rises to 70-80%. Should I stop venting at night and turn on a dehumidifier? If I stop venting at night, would that cause the plants to "deplete the co2" in the environment and suffocate?

Yo bro, dug around for ya and found this useful info, Ideal humidity levels in a grow room range between 50% to 70% in vegetative growth, and 50% to 60% for flowering plants. Heres the Link to it ... http://thehealingcanna.com/temperature-humidity/ hope that helps bro! & I use LEDs so Temps & Humidity are a lot easier to control. What setup are you using?

Alpha & Omega said:

Yo bro, dug around for ya and found this useful info, Ideal humidity levels in a grow room range between 50% to 70% in vegetative growth, and 50% to 60% for flowering plants. Heres the Link to it ... http://thehealingcanna.com/temperature-humidity/ hope that helps bro! & I use LEDs so Temps & Humidity are a lot easier to control. What setup are you using?

Click to expand...

I'm using LED as well! How do you suggest I lower humidity when the air coming into my room is over 60% during flowering?

De-Humidifier in your grow room. Plus good air circulation. Don't stop venting tho, maybe slow it down a bit.

Suck air from inside the building, but you ain't that bad yet, ...if in doubt use the dehumidifier

vostok said:

Suck air from inside the building, but you ain't that bad yet, ...if in doubt use the dehumidifier

Click to expand...

Do I turn off my exhaust fan when the dehumidifier is on? How would the plants get co2 if the exhaust is off?

first of all plants do not need c02 when lights are out.

and running a dehumidy and an exhaust fan together would be pointless.

Increase air movement and exhaust you'll be fine.

as long as you are between 40-70% with good air movement you'll have no problems

joe macclennan said:

first of all plants do not need c02 when lights are out.

and running a dehumidy and an exhaust fan together would be pointless.

Increase air movement and exhaust you'll be fine.

as long as you are between 40-70% with good air movement you'll have no problems

Click to expand...

So if humidity is above 70%, should I turn off the exhaust and turn on the dehumidifier? If it was over 70% humidity during the day time (lights on) and I turned off the exhaust in order to effectively use the dehumidifier, how often should I turn the exhaust back on and for how long to keep co2 levels acceptable?