How to use: Hang the fan outside the wall of tank; fasten it tightly with screw.
In my planted aquarium temp was close to 30 degree now after installing this fan I could reduce it up to 28 degree on day time and 24-25 degree during night time.only draw back is it is a little bit noisy when put in high speed.I am very much satisfied with this product
Product received in good condition.
Good performance and in fact, significant drop on water temperature by 3 to 4 deg.
very good air flow.but little noisy. good for small tank. will not take space above the tank. look good too.