I have a 1000+ sf flower room that has 2- 600cfm going out and passive air coming in. I had problems with yield in the beginning but after adding co2 it seems to work fine.
With that big of a space you are most likely running many lights so in my opinion more fans spread out would be ideal...
Blowing air in...
Reason being....Hot air from the lights cause extra wear and tear on the fan over time.
So blow that hot air out.
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I know this is an old post but i wanted to give my method if anyone searches in the future.
I recently had a all my plants in 3.75 net pots and wanted to transplant them in my ebb and flow system.
All you have to do is cut the net pots with a pair of scissors.... just keep chopping till the...
I just started flowering due to the size of the plants. They did not start growing pistils or pollen sacs. (Or at least I don't think they did)
This is my first grow and if someone could tell me the sex by the pictures, that would be great.
This is my first grow I am into my 6th week and all was well till about two weeks ago. Leaves started yellowing from the bottom up. I flushed them twice thinking nute burn.
After that someone suggested N deficiency. So I bought fox farms grow big 6-4-4.
Have been through two nute feedings...