How to tell if fan is blowing to much

Newz682

Member
Are there any specific symptoms which show up when the fans are blowing too much on the plants? Thanks!
 

DaBong

Well-Known Member
Good question.... I have heard that too much wind can stress a plant, but I run an oscillating fan on mine for like 4 hours daily and it hasn't hurt it. Just strengthens the stems up.
 

riddleme

Well-Known Member
Good question.... I have heard that too much wind can stress a plant, but I run an oscillating fan on mine for like 4 hours daily and it hasn't hurt it. Just strengthens the stems up.
Fans DO NOT strengthen the stems, that is a myth, purpose is to prevent damping off diseases, I run my fans 24/7, you should too :)

if you want stronger stems,,,,add silica
 

Newz682

Member
Good question.... I have heard that too much wind can stress a plant, but I run an oscillating fan on mine for like 4 hours daily and it hasn't hurt it. Just strengthens the stems up.
Thanks Dabong. Any idea how it shows the stress?
 

Newz682

Member
Fans DO NOT strengthen the stems, that is a myth, purpose is to prevent damping off diseases, I run my fans 24/7, you should too :)

if you want stronger stems,,,,add silica
I have 6 plants, 2 small oscill fans pointed at the bases of the stems and one larger non-oscill fan blowing on the tops down. Both oscill run 24/7, the top down one run 12/12. You think I should keep that top down fan on 24/7? I'm concerned that I am drying out the leaves although the humidity in the room is about 60%, about a week into 12/12.
 

riddleme

Well-Known Member
I have 6 plants, 2 small oscill fans pointed at the bases of the stems and one larger non-oscill fan blowing on the tops down. Both oscill run 24/7, the top down one run 12/12. You think I should keep that top down fan on 24/7? I'm concerned that I am drying out the leaves although the humidity in the room is about 60%, about a week into 12/12.
better to have one on the floor blowing up CO2 is heavier than O2 best to keep it circulating, 60% for flowering is a bit high low 40's would be better but this depends on your temps. Each aspect of your garden is critical and should be dialed in properly. need to learn to read the plants, they will tell you if there is a problem as well as if they are happy

everything you need to know is in the threads in my sig a year ago I ran a class in my noob advice thread, this continued with advanced info in my calling all noob growers thread, I've been told that it takes about 2 weeks to read em all but everyone that has is growing dank :)
 

tet1953

Well-Known Member
I have been running my fans only during light hours, to no ill affect. I had read that the chemical processes for which air circulation is critical (aside from heat removal) such as CO2 intake and toxin release, are really only occurring during light hours. I'm sure that having them on during dark also would be beneficial if it makes any difference at all, but I'm not sure it does. People far more expert than I can answer that.

The way I tell it's too much is when it starts affecting how the leaves are growing. I use occilating fans, but when the room gets crowded the fan can get too close and I start seeing a few leaves bent or growing in a weird direction, so I back it off. np. I do know that having air circulating on the plants is critical.
 

brownbearclan

Active Member
One symptom can be that the stems turn purple of the leaves start to fold...downward I think it is, which just means they are getting cold from the fan at night. Like tet1953 said it's mostly beneficial in the day but a lot of peeps run them 24/7. I kinda do a mix of both depending on the temps. Plus my fan is a POS and needs to cool down sometimes lol. =)
 
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