A bulk case of the Dude's choice 100% natural Black Mountain Seiryu Stone

Small size: Each piece averages 3"-6" of various sizes. Averages 3-4 pounds per case.  7-8 pieces per case.

Large Size: Each piece averages 7" - 12" of various sizes. Averages 10-12 pounds per case. 3-4 pieces per case.

Black Mountain Seiryu is the darker cousin of the well known Seiryu stone.  The dude personally likes the grey, almost blueish hue that it has compared to regular light grey Seiryu stone available.  The unique texture and amazing details in these stones allow you to easily create a natural looking habitat.  

Seiryu may slightly raise pH and water hardness. Controsoil and other substrates can help balance that out.

Rocks must be rinsed prior to using. The Bio Dude is unable to guarantee that no pieces may break in transit. They are packaged with care to prevent any sort of cracking or breaking.