Features: 1. The unclean water tank can negatively impact the health of your farm animals. Say goodbye to the hassle of frequently replacing cloudy water. The Water Purifier Cubes are ultra-absorption activated carbon blocks designed to help maintain clean drinking water for your livestock. 2. Water Purifier Formula: The Water Purifier Cubes are made of honeycombed ultra-absorption activated carbon blocks that effectively help filter dirt, cloudiness, and odors from livestock water troughs. Solid composition, no powder, no impurities, and will not discolor water. 3. Safe for All Animals: The Water Purifier Cubes are specially designed to provide cleaner water for various animals, including fish and reptiles. Intended for animal use only. 4. Easy to Use: Simply place the cube into the water tank. Rinse with warm water before initial use. The cubes can be rinsed with warm water for reuse. With proper maintenance, each cube lasts up to 6 months for optimal performance. One cube treats up to 150 liters of water. Depending on tank size, multiple cubes may be required. 5. Help ensure cleaner drinking water for farm animals or aquatic pets with Water Purifier Cubes. Note: This product is not intended for purifying water for human consumption. Notice: Actual color may vary slightly due to monitor settings and lighting. Allow 1–3 cm variation due to manual measurement. Specification: Material: Natural activated carbon, sepiolite clay mineral Size: 10 x 10 x 10 cm Includes: 1/2/4 (optional) x Water Purifier Cubes