Some help with my exhaust fan.

GrizzlyAdams

GrizzlyAdams

Well-Known Member
Its recommended to exchange the air in your growspace ever 1-2 hours even while the lights are off. During the sleep cycle of plants is when their stomata are the most active exchanging Co2 and oxygen. I run for 15 minutes every 2 hours while the lights are off, but my space isn't that full at the moment. If your growspace is crammed full of plants I'd exchange air every hour.
 
del66666

del66666

Well-Known Member
i keep mine on 24/7, im sure we all like nice fresh air, and when they start to flower its on for smell and so no moisture bulids on buds .
 
Sgt.Sly

Sgt.Sly

Well-Known Member
GrizzlyAdams said:
Its recommended to exchange the air in your growspace ever 1-2 hours even while the lights are off. During the sleep cycle of plants is when their stomata are the most active exchanging Co2 and oxygen. I run for 15 minutes every 2 hours while the lights are off, but my space isn't that full at the moment. If your growspace is crammed full of plants I'd exchange air every hour.
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Where do you get this information from??? Thats's dead wrong. Your saying the plants are exchanging C02 and o2 more during the night cycle? And if that's the case (which it's not) then why would you tell someone to have their fans on LESS then in light hours?

The process of photosynthesis, is what creates O2 from C02. The more intence the light the better the plants ability to convert c02 to the point where you can ADD C02 to the room for accelorated growth.

NO ONE adds their C02 at night, because there is no photosynthesis to convert it and it would be a complete waste.
 
Sgt.Sly

Sgt.Sly

Well-Known Member
I would agree, that you can leave fans off at night, provided things are not totally air tight. It is a good idea to have the air replaced, and is generally not the best practise to keep em off, however, I do it, and have not suffered.
 
benson.

benson.

Well-Known Member
if i opend my window a little through the night and put in a little heater to keep it warm
would that work for air!
 
Sgt.Sly

Sgt.Sly

Well-Known Member
benson. said:
if i opend my window a little through the night and put in a little heater to keep it warm
would that work for air!
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Careful with heaters, but sometimes just leaving the door open a crack is enough. However, fresh air is always good.
 
retardigraded

retardigraded

Active Member
Where do you get this information from??? Thats's dead wrong. Your saying the plants are exchanging C02 and o2 more during the night cycle? And if that's the case (which it's not) then why would you tell someone to have their fans on LESS then in light hours?

The process of photosynthesis, is what creates O2 from C02. The more intence the light the better the plants ability to convert c02 to the point where you can ADD C02 to the room for accelorated growth.

NO ONE adds their C02 at night, because there is no photosynthesis to convert it and it would be a complete waste.
Click to expand...
you're both right, in a way. The stomata will exchange o2 from co2, but at night plants don't photosynthesize, they respire. So during the day your plants use co2 and convert it to o2, and at night they take in o2 and release co2. I would explain further but I was sleepin during that part of biol 152 :sleep:

Either way, it is best to have air exchange 24 hours. Plants, like you, require gas exchange to be healthy whether they are sleeping or not.

In case you don't believe me, it also says so at the bottom of this page:
http://www.purchon.com/biology/respire.htm

Main point: Yes run your fans at night!
 
Sgt.Sly

Sgt.Sly

Well-Known Member
retardigraded said:
you're both right, in a way. The stomata will exchange o2 from co2, but at night plants don't photosynthesize, they respire. So during the day your plants use co2 and convert it to o2, and at night they take in o2 and release co2. I would explain further but I was sleepin during that part of biol 152 :sleep:

Either way, it is best to have air exchange 24 hours. Plants, like you, require gas exchange to be healthy whether they are sleeping or not.

In case you don't believe me, it also says so at the bottom of this page:
http://www.purchon.com/biology/respire.htm

Main point: Yes run your fans at night!
Click to expand...
Yea go with what this guy said. He's right about that. And how come you want your fans off anyways?
 
F

fanya

Well-Known Member
Your exhaust fan should be connected to a carbon scrubber unless you don't care about smell at all. Unless you are running a sealed room with co2 there is no reason imo that you shouldn't be running your fan. Air exchange is good as other posters have said.
 
retardigraded

retardigraded

Active Member
Growing is awesome! I'm not good at it yet but I love it. It's too bad your girl can't/won't partake in the fruits of your labor tho.
 
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