[Effective filtration] The filtering sponges is made of an environmentally friendly sponge, with more folds and a good filtering effect. Purifies water without harm the pH of the water, making it safer for small fish and shrimp. [Product size] The sponge size is 115cm (diameterhigh), the trachea rigid measures 5cm long and approx. 2cm in diameter. Suitable for small aquariums 5-10 gallons. Attention: no air pump. [oxygenation and silence] The design of the air flow groove leads to the overall water flow under the action of the power, Increasing the amount of oxygen dissolved in water. In addition, the noise is low, which will not disturb our sleep. [clean and use] the sponge can be used several times. Before use, soak the sponge in the bathtub for 5 minutes. Do not use tap water, rinse only with aquarium water, rinse and wring several times. [Large application] this small eponge filter perfect for aquariums of farming aquariums, the Betta aquariums, nano-aquariums, turtle
