Its activated carbon block filters solid components to prevent powdery residue and black water problems. Say goodbye to changing turbid water quality. This water purification block can effectively absorb any harmful dirt, ensure the safety and health of pet fish, and improve the cleanliness of pet fish habitat. Name: Water Purification Block Material: Shell + Anthracite Dimensions and Weight: A: Approx. 10x10x10 cm/3.94x3.94x3.94 inches, 410 grams Keep your pet fish healthy and happy with our sink water purification block. Say goodbye to changing turbid water quality! Higher filtration efficiency allows your fish to thrive and the maintenance cost is lower. Just wash with warm water and soap before use. Name: Water Purifier Cube Material: Shell + Anthracite Dimensions and Weight: A: Approx. 10x10x10 cm/3.94x3.94x3.94 inches, 410 g List: Water Purifier Cube for Drinking Trough x1 Water Purifier Cube for Livestock Drinking Trough Specifications 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. Sold by-YJL official store