Natural Ore Aquarium Volcano Rock Lava Stone Fish Tank Filter Material Bacteria Cultivation

Feature: 1. Volcanic rocks contain a variety of minerals and trace elements. 2. Natural honeycomb porosity is a good environment for nitrifying bacteria to grow, rapid culture nitrifying bacteria. 3. Strong adsorption, effective adsorb harmful substances in water, water purification effect is good. 4. Stabilize PH value in water, can be laid on the bottom of the tank. 5. The filter material can be used on both seawater and fresh water. 6. Used for upper filtration, filter bucket, tank bottom tank filter device and wall hanging filter tank bottom. Specification: Condition: 100percent Brand New Item Type: Aquarium Lava Stone Material: Natural Ore Color: As Pictures Shown Package List: 1 x Pack of Aquarium Lava Stone1 x Net Bag Note: Put the volcanic stone into the net bag, and it is recommended to clean it once every 3 months to achieve a cleaner filtering effect