6-8mm in size, this is the perfect grade to build an aquascape on and secure plants in
Ethically and sustainably sourced under license in the USA
A dark pewter gray when dry - jet black when wet, this is a great way to way to give your aquarium a dramatic look without using to artifical substrate
Triple washed and kiln dried with minimal fines
No toxins, no debris, no artificial colors - 100% natural
