All natural Great for nature scapes and for anubias and buce tanks. Your driftwood will quickly become the focal point of your aquarium decor. Nocturnal fish,ghost shrimp and smaller fish like a driftwood shelter for hiding
Small size:sizes varies approx 5.9inch length or less
Large size: approx: width 2-3inch , length 5- 9inch or less
Prolonged boiling recommended,boiling/soaking for 3-4 hours. You have to boil it for at least an 1 hour (maybe twice boiled and dump the tannin concentrated water midway both times). Afterwards, completely submerge the wood in a bucket with water, weighing it down with something i.e. a rock , heavy glass cup etc, until it doesn't float anymore when the weight is taken off.