Lava rocks are of volcanic origin and feature a porous texture, making them lightweight and versatile. They are shaped into oval or round forms to resemble river stones. They can be used in a variety of aquarium designs, including a golf fish tank. Thanks to their relatively light weight, large structures can be created with them. Lava rocks do not increase the hardness of aquarium water.

Weight: 13.5-15.5 kg, approximately 7 pieces.

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