Any suggestions on cooling my 15gal reservoir?

I personally am a never has been?..so take my opinion w/ a pound of salt
Here??s the WeeZard opinion from another thread?..

Relax Brah. Your tank temp is OK.
As long as the water is clean and the light is excluded you can run as high as 90 F. in the res.
Maybe higher, ah dunno.
But I've run near 90 for 3 weeks and did not change out the water at all during bloom.
I use no preventative other than what's already in my tap water and have yet to see any problems, (3rd grow).
Course, that could just be luck.

Well from what I??ve read a chiller??I??m sure that??s no surprise.
I did see a post (I think over at ICmag) where a grower installed 2 PC fans (1 in & 1 out) on the lid of his controller. He loved it?..if you suffered low humidity to begin with, it might be fun to do.
My best advice is to wait a minute or two??the Weeze is omnipresent?..

Horsemanrocks.