well I have central air so I have it on for me so I am not too worried about that. I know some one who has a fan like that I didn't think of grabing one. I just got a reg osc fan. I think that its too big for them so I will get out and grab one of them. as for the co2 I will agree with you on that it didn't seem like it was a big deal for my little set up. thanks man.