well i moved my plant into her new home and it has 4 27w cfl's my temp goes from 83.8 to 84.4.i have 1 6 inch fan blowing on it and 1 12 inch fan on it and the temps are still are that high.both fans are blowing on high.is that temp to high or is it high but still ok.
Optimum temp is 76-78. 84 is high but you're not going to kill anything, might not end up with as healthy plants...? Sounds like you need a source of cold air, A/C or something. Can you move the 6" fan to a hole in a board stuck in a window or something, to bring in cold air at night. Don't know what region you live in but I run my lights at night here when its colder outside and use the air to cool the room. Sounds like you have a pretty small setup, if you used some 6" ducting from the fan to grow box or whatever you're using that may work. May not be worth messing with.....your choice.
I guess thats the problem of micro grows. Everything is in a cabinet, which becomes the "grow room" and in turn your house or what ever room it is in becomes "outside". Thus having the challenge of getting cold air to your "room". Sorry guys, don't have a solution, haven't done much in the way of micro grows.