Fan Questions!! ;D

So im making a grow room and i have a hole in the bottom of the box for air intake and a hole at the top of the box for old hot air to leave. The only thing im not sure of is would it be okay if my fan would be blowing on my plants because the hole in the bottom of the box is for the fan and it would be point right at my plants. Should i just have it on a low setting or should i somehow block the wind from hitting the plants? please help, if you are unsure of what im asking just let me know and ill try to explain better ;P. Thanks

you dont want it blowing straight on them it will stress them

what do you recommend i should do?? here is a pic of my soon to be grow box

i would find a way to redirect the air looks like it will be fine for when they get bigger the fan will be blowing on the bucket not the plant

find something to raise the pots till then like a box or something just enough so it not blowing straight on them