Description: Material: activated carbon Color: black Size: S:10*10*5cm/3.94*3.94*1.97inch L:10*10*10cm/3.94*3.94*3.94inch Feature: 1. This fish tank water purification activated carbon is the ideal choice for your fish pet's life, providing clean and transparent water quality for your aquatic ecological environment. 2. Made of high-quality activated carbon with strong adsorption capacity, it can effectively remove odors, pigments, residual chlorine, and harmful substances in water, maintain clear and transparent water quality, and provide a clean and healthy living environment for fish. 3. Activated carbon particles are uniform and fine, with a larger surface area and better adsorption effect, which can effectively extend the service life of the filtration system and improve the stability of water quality. 4. The activated carbon for fish tank water purification is easy to replace and clean. Just regularly check and clean or replace the activated carbon to keep the water clean and ensure the healthy growth of fish. 5. Whether you are a novice fish farmer or an experienced aquarium enthusiast, this fish tank water purification activated carbon is an essential product for maintaining aquatic ecological balance and maintaining clean water quality, allowing your fish to enjoy a clear and transparent home. Note: 1. Manual measurement may have an error of 1-2cm. Please understand, thank you. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. Package included: 1 * Fish tank water purification activated carbon Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.