Wait a minute. I thought that you told me and @PharmerBob, that you ran 4 fans to control heat
CoyoteCodyRegular
repins12
You know to control temperatures in my tent, I just reverse the air flow when the lights are out, instead of pulling new cool air from the bottom it exhausts out the bottom and intakes at the top, since heat rises, then when the lights come on, I switch them so it intakes at the bottom bringing cool air in and expelling hot air out the top.
CoyoteCodyRegular
I run two fans up top and two at the bottom, not at the same time obviously.
No they dont, as I said the dont all run at the same time, that is very obvious. When the one on top is exhausting the one on bottom is in taking, and vice versa. Meaning there is always fresh air being pumped in and old air being pumped out, they work together in pairs. They are only about 200 cfms each, but that’s all I need.
You are really over complicating this, I will spell it out for you, there is no more or less to it than this, they are all pointing and blowing in their stock and factory direction, one on top is pointing into the tent and one is pointing out of the tent. Then we have the two on the bottom, one is pointing into the tent and one is pointing out of the tent. I am not working against anything, I dont have anything reversed, I dont have anything blowing against each other etc. Again when the lights are on, the one pointing out of the tent on top is on, and the one on the bottom that is pointing into the tent is on. When the lights are off the one on the top that is pointing into the tent is on whereas the one one the bottom that is on is the one pointing out.
This is what you left on my post, copied and pasted from my post, My First Indoor Grow Start to Finish