Simple air circulation question

**Azralen** · 18-07-22, 12:43 PM

Hello friends,

I have a simply question. Is IT bad idea, to have a fans ONLY on the floor in grow tent And blow air from Down up to the Plants? Or i need some air circulation from bottom/up? Can Plants benefit from air coming just from downside? Like from underneath of leaves? Thank you.

**MrC** · 18-07-22, 12:51 PM

I have 2 at different heights and opposite sides so the plants are covered from top to bottom. They're not blowing upwards just oscilating. These are tower fans I have

**mpsj** · 18-07-22, 01:59 PM

Originally Posted by Azralen

Hello friends,

I have a simply question. Is IT bad idea, to have a fans ONLY on the floor in grow tent And blow air from Down up to the Plants? Or i need some air circulation from bottom/up? Can Plants benefit from air coming just from downside? Like from underneath of leaves? Thank you.

I place one 9 inch variable-speed fan facing down towards the floor of my 4 x 4 tent.

**Sun&Soil** · 18-07-22, 04:22 PM

Are you growing in an enclosure. If so, the most important thing is to make sure you are venting it so new air is being drawn in and the spent air is being removed. This is primary.

Your oscillating fans are secondary meant to move the air in the space. It has multiple functions. It will help even out temps, help dissipate moisture in the inner canopy, and if your stems are moving it will help strengthen the plant fibers so they can support the weight of the flowers.

I would recommend positioning it so you can see your fan leaves dancing.