(With UV sterilization) TARARIUM H8F Aquarium Filter for 40-150 Gallon Tank, UV Fish Tank Green Clean Machine Submersible Powerful Pump Canister Filter 400GPH for Pond Turtle Tank Saltwater Freshwater Crystal Clear Green Killing Accessories Circulates water 4 times per

Circulates water 4 times per hour for a 40-gallon tank

【NOTE】If you are using a fish tank

and fish disease prevention

【NOTE】Please avoid UV LIGHT direct exposure to the fish

(With UV sterilization) TARARIUM H8F Aquarium Filter for 40-150 Gallon Tank, UV Fish Tank Green Clean Machine Submersible Powerful Pump Canister Filter 400GPH for Pond Turtle Tank Saltwater Freshwater Crystal Clear Green Killing Accessories Circulates water 4 times perCRYSTAL 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. 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