Review on 🐠 Optimized Seven-Master Aquarium Chillers, Fish Tank Cooling Fan System with Wind Power and Adjustable Angle, Clip-On Chiller with 2/3/4 Heads, 2 Control Gears by Rachel King

We bought this for our basement axolotl aquarium. It fluctuated around 70-71 in the summer heat, so we wanted to lower it a bit. That helped. It drops to 68 on hot days, and 66 on cool days only at the lowest setting. There's not much more noise at low settings than with the filter, but it's noticeably louder at high settings. However, you should be aware that if you have a rim on your tank you will need an adapter. Luckily I had someone 3D print it for me. All in all a nice little fan that does exactly what we wanted.