Fish Tank Filter for 10-40 Gallon Tank, U-V Aquarium Filter Rainfall Submersible

Fish Tank Filter for 10-40 Gallon Tank, U-V Aquarium Filter Rainfall Submersible Green Clean Machine 120GPH Internal Filter for Betta Turtle Freshwater Saltwater Tank Crystal Clear Green Killing CRYSTAL CLEAR - Turns CLOUDY and GREEN water crystal clear in 3-7 days. The larger the fish tank, the longer it takes. Reduce the number of water changes in the fish tank. DOUBLE FILTRATION - First stage Biochemical Sponge Filter. Second stage 254nm wavelength U-V Light treatment. HAPPY FISH - The rain shower pipe mimics the running water of the natural environment as if it were a small waterfall. And the fish very happy. SEPARATE SWITCHES - Control the water pump and fish tank light separately. When you only want to use the aquarium filter function, you can turn off the fish tank U-V light separately. SMELLS FRESH - Once the fish tank is full of green will be accompanied by the smell. This green killing machine can reduce the unpleasant smell in the fish tank.