![Amazon.com : VILLCASE Large Aquarium Rocks Aquariums Volcanic Rocks,Natural Underwater Lava Rock Ornament Lava Filter Material for Fish Tank 450g Lava Rocks : Pet Supplies Amazon.com : VILLCASE Large Aquarium Rocks Aquariums Volcanic Rocks,Natural Underwater Lava Rock Ornament Lava Filter Material for Fish Tank 450g Lava Rocks : Pet Supplies](https://m.media-amazon.com/images/I/51Qk9Nu9VNL.jpg)
Amazon.com : VILLCASE Large Aquarium Rocks Aquariums Volcanic Rocks,Natural Underwater Lava Rock Ornament Lava Filter Material for Fish Tank 450g Lava Rocks : Pet Supplies
![Amazon.com : VILLCASE Large Aquarium Rocks Aquariums Volcanic Rocks,Natural Underwater Lava Rock Ornament Lava Filter Material for Fish Tank 450g Lava Rocks : Pet Supplies Amazon.com : VILLCASE Large Aquarium Rocks Aquariums Volcanic Rocks,Natural Underwater Lava Rock Ornament Lava Filter Material for Fish Tank 450g Lava Rocks : Pet Supplies](https://m.media-amazon.com/images/I/51Qk9Nu9VNL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : VILLCASE Large Aquarium Rocks Aquariums Volcanic Rocks,Natural Underwater Lava Rock Ornament Lava Filter Material for Fish Tank 450g Lava Rocks : Pet Supplies
![LAVA ROCKS as MECHANICAL filter ? people use lava rock as bio media in small-sized pebbles but i want to use it as mechanical filter in in my diy filter for my LAVA ROCKS as MECHANICAL filter ? people use lava rock as bio media in small-sized pebbles but i want to use it as mechanical filter in in my diy filter for my](https://preview.redd.it/nnncrte4h8671.jpg?auto=webp&s=819cd3694ce5ffce27cfe8e3b55f0234ebcf9cfc)
LAVA ROCKS as MECHANICAL filter ? people use lava rock as bio media in small-sized pebbles but i want to use it as mechanical filter in in my diy filter for my
![A two-step crushed lava rock filter unit for grey water treatment at household level in an urban slum - ScienceDirect A two-step crushed lava rock filter unit for grey water treatment at household level in an urban slum - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S030147971300738X-gr1.jpg)