This aquarium filter is very quiet and works great. The waterfall design increases the contact between water and air and achieves the effect of increasing oxygen so your fish are happy. The fish tank water filter has two double layers of filtering sponge that contains activated carbon to remove impurities,clear up discolorations and helps reduce foul odors from your aquarium water so the water stays fresh and clean. I am very happy with this aquarium water filter and it works like it should. #RankBoosterReview #Sponsored #AKKEE