I was fortunate enough to get a new lighting setup on my frag system and I noticed that the tank temperatures are up a degree or two. Right now the temp will run up to 79.7° before the light kick off at the end of the day and that's higher than I'd like. I know fans are quite (surprisingly) effective and lowering the temp thanks to evaporative cooling and placed a box fan next to the tank to see what it would do. After a few hours the tank temp is down to 78.8° so it looks like I'm going to be adding a fan to the setup. I've used a number of different fans in the past and I'm wondering what you guys would recommend. Has anyone tried an official 'aquarium fan' that are offered or should I just stick with a clip on and make it work? Aquamed has a pretty cool one that mounts on the side of the tank and is pretty low profile but it's $30. I don't mind spending the money but all of the fans I've used in the past only work for a season or two before breaking and I'm curious if these application specific fans hold up any better.