leaves are yellowing and wilting after using a fan

I wouldn't question the fan (I have an external exhaust fan connected to an internal carbon filter) - I would question the nutrients. I thought I read somewhere (I read a ton of material) that miracle grow was bad for marijuana. Are you checking the PH level on anything?

Too much miracle grow sir, you have a ph lockout. It will be painful but you need to Start over, it happens to the best of us bro.

I had a pretty strong fan blowing directly onto my plants and I used nuts because I’m trying to keep my costs low because I am a college student

Fans aren't going to have that effect on leaves unless they're literally blowing gale force .... but without a diary, we have no other information - things like pH, temps, humidity, watering amount even the age of the plant is going to be so important! Without that info, we can't point to something that is more likely the culprit. I have to say, though, that using Miracle Grow nutes is not particularly good... why aren't you using nutes designed specifically for cannabis? I think that and pH levels are the main source of your troubles but without a diary and other photos, it's really impossible to tell. Do yourself a favor and start a diary.. if you can, reconstruct the conditions and feed for last week and this week ... diaries help us help you when problems/questions arise! Good luck!