Black Lava is of volcanic origin, featuring a porous texture, making it very lightweight and versatile. Due to its comparably low weight, it is possible to create large structures with it. For example it is possible to design a “Green Reef”. Green Reefs are tall scapes covered in various epiphytes like ferns of the genus Microsorum or Bolbitis, Pogostemon helferi or different kinds of moss. Their roots will find a good foothold due to the porouse sctructure of the stone. Individual stones can still be moved or exchanged later on, making the layout modular. Also a classical Iwagumi can be made from Black Lava since the very dark colours make for a good contrast to the grey color of the more commonly used kinds of stone. As an advantage Black Lava does not increase the hardness of the tank water. Lava rock is often used in conjunction with roots. The individual stones can be covered with moss to form forest-inspired scapes. Do you know that Black Lava is also used in different settings and not for aquarium uses as well? We have had people using this for Fijian Ground Cooking to people using it as a filtration. Why does ot look like concrete?  High quality black lava does look like concrete at times. At there unwashed state they do have a greyish tinge that looks like concrete. Concrete however turns to dust and pure concrete is very brittle. A lot of our customers may initially get disappointed as our pieces do come unwashed or they are dissatisfied with that one piece.  We always advise our customers is if the pieces looks too big or they need to break it down,  a chisel and a hammer will break it down nicely.  Of course if you need our assistance then simply send a message and we can assist you with your enquiry.  Shipping We can send up to 5kg. If you need more then 5kg, this will be a bulk order and you will be quoted separately. PLEASE NOTE THAT WE WILL DO OUR BEST TO PICK THE PIECES FOR YOU. PLEASE BE SPECIFIC IN YOUR REQUEST ON THE NOTES. All pieces are around 1kg and around 8-15cm

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