Feature
●【Pure Natural and Dark Color】Black lava is of volcanic origin and is rich in minerals and trace elements. It remains in its original state, except for being hand-picked and cleaned. It has a very dark color, a rough surface and a porous texture. Due to its comparably low weight, it is possible to create large structures with it.
●【Diverse Types of Landscaping】Black Lava Rock is an essential aquascaping stone thats often used in all types of aquarium setups. It can be used alone or combined to create landscapes such as caves, cliffs, and mountains. In addition to direct use, it can also be crushed and used as a bottom, which facilitates the growth of plant roots.
●【Suitable with Aquatic Plants and Ferns】Black lava is often paired with epiphytic aquatic plants and aquatic or terrestrial mosses. Simple aquatic plants find root footholds on stones easily and self-attach rather quickly. Moss-covered rocks can form a forest scene.
●【Porous Structure for Bacteria Cultivation and Water Purification】The porous texture of lava rock creates a good habitat for the survival and development of beneficial bacteria such as nitrifying bacteria, making the aquarium environment healthier. The rough surface also has a filtering function that absorbs harmful bacteria, debris, feces and harmful heavy metal ions, keeping the water in the tank clean.
●【Stable Nature and Activated Water】Lava stone is stable in nature, so it does not affect the composition of the aquarium and increase the hardness of the water, and it helps to stabilize the PH value and mineral content. It also promotes the activity of oxygen ions in the water, which helps the metabolism of plants and animals in the aquarium.
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[04 Red Lava Stones（3-10inch | 16lbs）]
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[10 Dark Seiryu Stones(3-11inch | 36lbs)]
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[05 Black Lava Stones（3-10inch | 16lbs）]
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Description
LANDEN Aquarium Stone- Black Lava Stone
Specific Information-LANDEN Lava Stone
Specific:3-10 inches, 16lbs. Its PH is inert.
Each stones color, shape, and size are unique because of its natural sourcing.
*It is normal if the stone in the package has a peculiar smell. The stone has volatile alkaline organic matter in its natural state. The peculiar smell will disappear if you put them in a ventilated place to dry for 24 ~ 48 hours.
Some stones are polished flat at the bottom, which is more convenient for positioning them in the landscape.
Product Details
Variety of Landscaping-Crushable
- Various shapes and gaps can be further combined with another stone or driftwood.
- can be used as a bottom, then it increases the air permeability and helps plant roots to grow.
Porous and Light
- The holes and pores on the surface provide beneficial bacteria that help keep the aquariums normal nitrogen cycle.
- Due to its low density, It is possible to create a large landscape by using a hammer to crush the stones and turn them into a substrate.
Comparison Table-LANDEN Stones
 Black Lava Stone |  Red Lava Stone |  Tonwa Stone |  Pahai Stone |  Baise Sedimentary Stone |  Dragon Stone | |
|
Size
| 3-10 inch | 3-10 inch | 2-8 inch | 3-10 inch | 2-6 inch | 2-8 inch |
|
Gross Weight
| 16 lbs | 16 lbs | 17 lbs | 30 lbs | 18 lbs | 16 lbs |
|
Color
| Black | Red | Black | Mixed Gray-blue | Gray | Brown |
|
Acidity & Alkalinity
| Neutral | Neutral | Weak Alkaline | Neutral | Weak Alkaline | Neutral |
|
Cleanable
| ? | ? | ? | ? | ? | ? |