Canopy Ventilation

[Aquattro]

I think the upward vents are a good idea, although not sure if I need to fan air out, or let convection carry the heat. At least 2 in the sides to blow across, and I'm trying to figure out venting.
I've been looking everywhere for some small clip on fans, but it's not fan season around here I guess. Hydroponics shop had one, but almost 50 bucks.
I'm really close to a Profilux to manage all this stuff now, and I hope to run without a chiller as it's pretty loud. Volume on the TV is way up with that thing running, and I'll be more popular around the house without it.