Your tank! Are you looking for a magical natural look and perfect biological filtration for your aquarium? Discover the secret preferred by "Aquascape" professionals. Natural volcanic lava rocks are not just decoration, but the foundation of a clean life inside the tank. ✨ Why are lava rocks the ideal choice for your tank? Natural Biological Filter: Thanks to their dense micro-pores, the rocks provide a giant surface area for the growth of beneficial bacteria that break down harmful ammonia and nitrite, keeping the water clean and pure for longer. Ideal Environment for Plants: The rough surface of the rocks makes them an excellent base for anchoring aquarium plants like "Anubias" and Java moss, and they are also rich in trace minerals that nourish aquatic plants. 100% Safe: Completely natural rocks, they do not affect water chemistry or change acidity levels (pH), making them safe for all types of fish and shrimp. Lightweight and Easier Arrangement: They are lightweight compared to ordinary rocks, which protects the tank glass and gives you more freedom to build amazing underwater caves and slopes ✨ Take your tank to the next level today! Available now from us in different weights and sizes (black) The price is 15 SAR per kilo, and for more than 10 kilos, it is 12 SAR. The color is black, but it has not been cleaned as shown in the pictures.