Description: Changing cloudy aquarium water can be troublesome... An unclean aquarium is harmful to the life of your pet fish. Maintain the sanitation of your water pet’s habitat with the help of this Eco-Aquarium Water Purifier Cube. A fish tank cleaner that filters dirt, cloudiness, and odor... Honeycombed Ultra-Absorption Activated Carbon Block Solid composition, no powder, no impurities, does not cause black water.Say goodbye to the trouble of constantly changing cloudy aquarium water. Filters and absorbs any dirt, or chemical that may be harmful to the health of your pet fishes. The adsorbed material is firmly controlled and oxidized to improve the filtration efficiency while extending the service life of the cube. Significantly decreases the death rate of aquarium pets. Instead, their health level is increased in the process due to cleaner water. Maintains the water’s PH level as well as overall cleanliness. Specification: Wash the cube with warm water and soap before using. Recommended placement is near the water inlet of the fish tank pump. Do not position the grid filter downward, otherwise, it will clog up and affect the filtration effect. For best results, rinse or replace the filter every 3 to 6 months. The aquarium filter water cube is made of activated carbon, dense grid hole structure. It can absorb 99% of harmful in the aquarium, as well as odor. It can also absorb the organic waste in the aquarium. Feature: Type: Eco-Aquarium Water Purifier Cube Color: Black Size: 10cmx10cmx10cm Material: Activated Carbon Structure: Dense Grid Hole Package Include: 1 x Eco-Aquarium Water Purifier Cube It can effectively reduce the nitrate in the aquarium and adjust the PH .