Stunning vibrant pitch-black colour nano boulders, this rock fascinates for its smooth black-glazed surface, design possibilities are endless due to its excellent colour contrast and maze-like texture. Black Venom Nano Boulders is a high-impact rock that magnifies the green of plants and moss.
Mix and match with Black Venom Boulders and Heaven sand to achieve a high-impact composition.

*This rock may slightly raise water hardness.
*Standard regular water changes are enough to keep the hardness under control.
*An ideal stone for Iwagumi layouts.

Rock sizes 1-10cm