Review on 🐠 JANNIDE Adjustable Aquarium Water Cooling Fan - Fish Tank Chiller with 2 Cooling Levels for Saltwater and Freshwater by Teresa Brady

Works great. I have a 20g axolotl tank and this fan helps keep the temp down. However, I do a very thorough cleaning, including cleaning the fan, about once a month. As soon as you move it or apply even the slightest pressure, it throws back and gets very loud. For a while you can tune it in various ways to make it quieter, but eventually you'll have to replace it to keep the noise down. When it's in a room where noise isn't a concern, I've only stopped it working completely once, and that was after a year of constant use. My aquarium is in my bedroom, so noise is an important factor for me. Axolotls are pretty cheap pets, so I don't mind replacing them if necessary.