Features: 1. The unclean water tank can negatively impact the health of your farm animals. The Water Purifier Cubes are ultra-absorption activated carbon blocks designed to help maintain clean drinking water for livestock. 2. Water Purifier Formula: Made from honeycombed ultra-absorption activated carbon blocks, these cubes effectively filter dirt, cloudiness, and odor from animal water troughs. Solid composition with no powder or impurities, and will not discolor water. 3. Safe for Animals: Designed to provide cleaner water for various animals, including fish and reptiles. For animal use only. 4. Easy to Use: Simply place the cube into the water tank. Rinse with warm water before initial use. Can be cleaned with mild soap and warm water for reuse. With proper maintenance, each cube lasts up to 6 months. One cube treats up to 150 liters of water. Multiple cubes may be required depending on tank size. 5. Helps ensure cleaner drinking water for farm animals and aquatic pets. Note: This product is not intended for purifying human drinking water. Notice: Actual color may vary slightly due to monitor differences. 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