Quote Originally Posted by WeedyBoyWonder
ok 'dude', tell me, how was i acting like it was a 'big investment' i just said i cant affort it. i know i need a fan....
if anyone can tell me how this will EFFECT my crop, i would be very greatful.

And also, my 2nd question, ill e-kiss you if you can give me a rough idea.
Dude, no need to be sarcastic.

Most plants can tolerate temperatures of up to 90F.
High temperatures can seriously damage the roots of plants kept in containers depending on where you're keeping them.
If you don't have a medium that drains well enough, you could easily be looking at breeding grounds for bacteria, and high temperatures only worsen the case. (This also depends on how hot the lights you're using are. I use 500 watts and I know HPS' can get pretty warm)

Hot air, particularly hot, dry wind, causes too much moisture loss from the plant's foliage. Some evaporation from leaves is normal, but when vital moisture is being evaporated faster than the plant's ability to replace it, leaves dry out and wilt.

First symptoms of hot air injury are drying and browning at the tips and edges of older leaves. Then, tender new tip growth wilts, soon followed by dieback. Rapid moisture loss can cause tender leaves to turn black. Evaporation cools foliage, but if it doesn't get water from the roots fast enough to provide the evaporative cooling effect, the foliage gets hot, tender growth wilts and older leaves sunburn.

So you're basically looking at minimum (if your plant doesn't respond well to the heat) wilting and possibly some foliage burn.

Do you possibly have an old desk fan or anything for that matter?