Aquarium Filter Sponge Suitable For Aqueon Filter Replacement Filter Element Fish Tank Sponge Activated Carbon Media Material Product name: Aquarium Filter Element Suitable For Fish Tank Aqueon Filter Element Material: High-density cotton + Activated carbon + Plastic Dimensions: length*width S: 3.75 inch * 2.5 inch [9.53 cm * 6.35cm] M: 4.72 inch * 4.1 inch [12 cm * 10.4 cm] L: 6.5 inch * 5.3 inch [16.5 cm * 13.46 cm] Features 1. Aqueon Compatible Filter Cartridge This aquarium filter cartridge is suitable for aqueon filter and perfectly matches QuietFlow LED PRO Power Filter Size 10 and QuietFlow Power Filter Size 10 and QuietFlow E Internal Power Filter Size 20 and Aquatic Reptile Internal Filter Zilla Size 20 .With this aquarium filter cartridge, you can always maintain healthy water quality. 2.Super filtration performance The filter element is made of high-density cotton + more than 50% nut shell activated carbon, providing triple water filtration effect, effectively filtering and absorbing 99% of harmful substances. The filtration performance is better than other brands. Keep water sources clean more effectively and fish and turtles grow healthily. 3.Simple and quick installation The filter element must be rinsed before replacement to remove any surface dust. Then place the new element into the filter by aligning the keyway. Gently press the filter element into place. Installing the Aqueon filter element can be completed quickly, the entire installation process takes no more than five minutes, just take out the old filter element and replace it with a new one, without worrying about affecting your fish and other creatures. (Note: Please be sure to rinse the filter element before use) 4.Replace filter element every 2-4 weeks Research shows that after 2-4 weeks of filtration and absorption, the filter cotton will fully absorb and filter impurities in the aquarium. For the health of your fish and other organisms, you need to replace your aquarium filter every 2-4 weeks to keep your water healthy and clean. Notice 1. Due to manual measurement, there may be an error of 1-2mm, please understand. 2. We always maintain strict quality control processes to ensure the filtration capacity of this filter element and its perfect compatibility with aqueon filters. If you have any questions, you can contact us at any time, we will do our best to give you a satisfactory answer as soon as possible and help you solve the problem, don't worry.