The SunSun Cooling Fan for aquarium is perfect for all freshwater aquariums, especially the planted aquariums. Plants can easily decay in the aquarium if the water temperature goes beyond 28 degree Celsius. You can reduce the temperature by two to four degrees with this cooling fan. This fans can be easily installed on your aquarium. This comes with a clamp that makes it very easy to fix on the top or side of the aquarium. This can be placed in the same way as your aquarium lights. The cooling fan is especially important in hot and humid weather as there can be times that water temperature can become uncomfortable for all your aquatic organisms.