Formed by the rapid cooling of magma, Black Lava Rock is an extremely porous natural stone that is dark black in color and remarkably lightweight. Its surface area acts as a massive biological filter, providing ample space for beneficial nitrifying bacteria to colonize and improve the aquarium's overall health. These rocks are also suitable for non-aquarium use and will work beautifully as a structured accent in terrariums, paludariums, or similar planted enclosures.
Notes:
Approximate Dimensions:
Stones vary in shape, size, and density. Hole count and placement are unique to each stone.
Important: This stone is best suited for freshwater shrimp, nano fish, or small fry. If you have larger, curious fish or other fauna (such as a betta fish) that may try to explore such small crevices, there is a risk they may get caught or stuck in the cave. Please be mindful of this before placing it in your aquarium.
Overall rating: 4.8461537 / 5 from 13 reviews.
Review topics: ["size","looks","rocks","order","caves"].
"Even better than expected!"
"Ordered 15 of them. 3 refuse to sink even after sitting in the water for at least a week. I'm going to have to get some weights and wire to get them to stay down."
"Love this. Put some java moss on it and it looks great!"
"I really liked the look of this rock and wanted to use it in a large community tank that will feature a large shrimp population. Mine came with 3 entrances to the cave which makes it better than expected in my opinion. I recommend this product!"
"Nice large cave, shrimp love it and looks nice with java moss growing on it."
"My only issue was I was sent red but I can still use them"
"Bigger than I thought, but it works perfectly in my tank. Love that it has 3 tunnels that all intersect! Buce never disappoints!"
"It has the proper size not too big not too small. A nice addition to my nano tank."
"I was extremely happy with my purchase. The lava rock is perfect to plant orchids in or it has nice holes for different species of plants, insects and amphibians. I will definitely purchase again. Fast delivery."
"Good quality, very clean, looks perfect in my tank"
