It's very hot in my area and I was desperate for a way to cool my 30G axolotl tank. I put this fan on my tank hoping to see decent results but as the title says it actually made absolutely no difference. It didn't lower the temperature even by 0.01 degrees. It's like there isn't even a fan. The fan might be more efficient at lower temperatures, but it's utterly useless in hot weather when you need it most.
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