Help with inline fan?

I am wondering about my 4 in inline fan that I have in my grow tent. Im using it as an exhaust on top of the grow, with tubing leading the hot air out.
Is the fan too strong for for my plants, and not leaving them with enough Co2?

The dimensions are 2.5 ft x 2.5 ft x 6 ft

as long as you have as much air getting into the room as escaping, your plants will be fine. if you dont have enough area for air to get in, your plants will probably suffocate a little. usually if you have a hole the same size or slightly larger than the exhaust hole, in your case 4", you should be fine

i dont know.. i have 3 fans as you seen in the picture, those are all intake for fresh air. is there some kind of calculation i can do to figure out if im alright or not? i got this fan last grow and all my plants died, so im worried going into this grow with this fan.

theres no picture... and if you know the cfm ratings on your fans... add them up for intake and exhaust... make sure you dont have a ton more going out than coming in...

oh sorry, here they are haha

i might have more air going in than coming out now. will that affect anything?