I just bought the AC Infinity AI-120SCX dual 120mm for my canopy. They will be delivered today, so I can’t say whether it is a good choice or not. It's not the cheapest option but I liked the all in one convenience. There are also adapters you can buy to plug any AC computer fan into a wall outlet. Check out some online computer stores or audio / video stores.
The back of my canopy is open, so I plan to mount them on the back and put them on a timer. A lot of the reviews said they are loud but I already have some noise from pumps, powerheads and Kessil fans. Hopefully it won’t be louder than that. I’ll let you know what I think of them in a day or two.
