DONGKER Aquarium Cooling Fan,USB Hanging Fish Tank Chiller 2 Level Speed Adjustable for (less Than 0.35" Thickness Fishs Tanks)

【Sturdy and Long-lasting Fan】This Aquarium fan is made of high-quality ABS , lightweight and Compact. It can be used for a long time without easily fading or breaking. 【Applicable Fish Tank】 Fish tank wall thickness within 9mm/0.35 inch (under 20L water body).Aquarium Chillers can cool down your Aquarium freshwater or seawater. It can also make your cat, hamster, reptile or dog feel cozy and relaxed. 【Quiet & Low Power】USB Power Interface, Working Voltage DC 5V, Use Safety (packaging Without Power Plug) Energy Saving and Power Saving, USB Power Line Length Is About 1.3m/4.3FT 【Rapid Cooling】Two Level Adjustable Speed, Turbo fan creates strong wind power. Rapidly reduce the water temperature and lamps projected heat, can be cooled about 2 ℃ -4 ℃, 2 wind speed adjustable. Reduce the rate of oil film on the aquarium water surface. 【Hanging Installation】Just Hang It on the Glass and Tighten the Screw. （Whether the Size Is Suitable for Your Fish Tank).simple wall-mounted, can be adjusted and fixed by ABS plastic nut.