The dirty water tank is harmful to the life of your farm animals. Say goodbye to the trouble of constantly changing the cloud water tank. Water purifying cubes are ultra absorbent activated carbon blocks that can keep drinking water clean Water Purifier Formulas The water purifying cubes are made of ultra absorbent honeycomb activated carbon blocks which can effectively help filter dirt, cloud, odors, etc. in livestock. Solid composition, powder free and impurities free SAFE FOR ALL PETS The water purifying cubes are specially designed to provide clean water for all animals including fish and reptiles. It is safe for pets only. Easy to use: just put it in the tank. Just wash it with soap and warm water, and you can put it back into the water tank. Wash cubes with warm water before use. Make sure clean drinking water for farm animals or fish with these water purifying cubes today. Get yours now. (Note: this product does not work for humans' drinking water)