I got this fan to cool down my tank and not use the chiller as often. Seems to work, barely use the chiller in sunny Southern California. It brought my tank 155g down about 1.5 degrees. My only complaint and the 4 stars is it doesn't ever turn off. It's not a problem as I hook it up to my Reef Keeper, but I'm not sure it needs to be on all the time.
Also comes with no screws or mounting instructions so know what you're doing before you buy.
All computer fans working on DC voltage are listed in MM. Why are these in Imperial... will not buy.
I have been thinking of doing this to my stand for a while now and just haven't got around to researching the right fan to buy. Thank you for doing the research for me! Icecap is a good brand in the PC world too.